3f:null 40:["$","title",null,{"children":"Advent of Code 2023 — Day 7: Camel Cards | Philippe Rigovanov | Observable"}] 46:T1831,

--- Day 7: Camel Cards ---

Your all-expenses-paid trip turns out to be a one-way, five-minute ride in an airship. (At least it's a cool airship!) It drops you off at the edge of a vast desert and descends back to Island Island.

"Did you bring the parts?"

You turn around to see an Elf completely covered in white clothing, wearing goggles, and riding a large camel.

"Did you bring the parts?" she asks again, louder this time. You aren't sure what parts she's looking for; you're here to figure out why the sand stopped.

"The parts! For the sand, yes! Come with me; I will show you." She beckons you onto the camel.

After riding a bit across the sands of Desert Island, you can see what look like very large rocks covering half of the horizon. The Elf explains that the rocks are all along the part of Desert Island that is directly above Island Island, making it hard to even get there. Normally, they use big machines to move the rocks and filter the sand, but the machines have broken down because Desert Island recently stopped receiving the parts they need to fix the machines.

You've already assumed it'll be your job to figure out why the parts stopped when she asks if you can help. You agree automatically.

Because the journey will take a few days, she offers to teach you the game of Camel Cards. Camel Cards is sort of similar to poker except it's designed to be easier to play while riding a camel.

In Camel Cards, you get a list of hands, and your goal is to order them based on the strength of each hand. A hand consists of five cards labeled one of A, K, Q, J, T, 9, 8, 7, 6, 5, 4, 3, or 2. The relative strength of each card follows this order, where A is the highest and 2 is the lowest.

Every hand is exactly one type. From strongest to weakest, they are:

Five of a kind, where all five cards have the same label: AAAAA
Four of a kind, where four cards have the same label and one card has a different label: AA8AA
Full house, where three cards have the same label, and the remaining two cards share a different label: 23332
Three of a kind, where three cards have the same label, and the remaining two cards are each different from any other card in the hand: TTT98
Two pair, where two cards share one label, two other cards share a second label, and the remaining card has a third label: 23432
One pair, where two cards share one label, and the other three cards have a different label from the pair and each other: A23A4
High card, where all cards' labels are distinct: 23456

Hands are primarily ordered based on type; for example, every full house is stronger than any three of a kind.

If two hands have the same type, a second ordering rule takes effect. Start by comparing the first card in each hand. If these cards are different, the hand with the stronger first card is considered stronger. If the first card in each hand have the same label, however, then move on to considering the second card in each hand. If they differ, the hand with the higher second card wins; otherwise, continue with the third card in each hand, then the fourth, then the fifth.

So, 33332 and 2AAAA are both four of a kind hands, but 33332 is stronger because its first card is stronger. Similarly, 77888 and 77788 are both a full house, but 77888 is stronger because its third card is stronger (and both hands have the same first and second card).

To play Camel Cards, you are given a list of hands and their corresponding bid (your puzzle input). For example:

32T3K 765
T55J5 684
KK677 28
KTJJT 220
QQQJA 483

This example shows five hands; each hand is followed by its bid amount. Each hand wins an amount equal to its bid multiplied by its rank, where the weakest hand gets rank 1, the second-weakest hand gets rank 2, and so on up to the strongest hand. Because there are five hands in this example, the strongest hand will have rank 5 and its bid will be multiplied by 5.

So, the first step is to put the hands in order of strength:

32T3K is the only one pair and the other hands are all a stronger type, so it gets rank 1.
KK677 and KTJJT are both two pair. Their first cards both have the same label, but the second card of KK677 is stronger (K vs T), so KTJJT gets rank 2 and KK677 gets rank 3.
T55J5 and QQQJA are both three of a kind. QQQJA has a stronger first card, so it gets rank 5 and T55J5 gets rank 4.

Now, you can determine the total winnings of this set of hands by adding up the result of multiplying each hand's bid with its rank (765 * 1 + 220 * 2 + 28 * 3 + 684 * 4 + 483 * 5). So the total winnings in this example are 6440.

Find the rank of every hand in your set. What are the total winnings?

47:T7c9,

--- Part Two ---

To make things a little more interesting, the Elf introduces one additional rule. Now, J cards are jokers - wildcards that can act like whatever card would make the hand the strongest type possible.

To balance this, J cards are now the weakest individual cards, weaker even than 2. The other cards stay in the same order: A, K, Q, T, 9, 8, 7, 6, 5, 4, 3, 2, J.

J cards can pretend to be whatever card is best for the purpose of determining hand type; for example, QJJQ2 is now considered four of a kind. However, for the purpose of breaking ties between two hands of the same type, J is always treated as J, not the card it's pretending to be: JKKK2 is weaker than QQQQ2 because J is weaker than Q.

Now, the above example goes very differently:

32T3K 765
T55J5 684
KK677 28
KTJJT 220
QQQJA 483

32T3K is still the only one pair; it doesn't contain any jokers, so its strength doesn't increase.
KK677 is now the only two pair, making it the second-weakest hand.
T55J5, KTJJT, and QQQJA are now all four of a kind! T55J5 gets rank 3, QQQJA gets rank 4, and KTJJT gets rank 5.

With the new joker rule, the total winnings in this example are 5905.

Using the new joker rule, find the rank of every hand in your set. What are the new total winnings?

48:T26c6,viewof input = AOC.renderInput(`557T5 626 A777A 673 363Q6 158 63J35 229 TKKKK 401 AAA34 653 77888 946 8T829 576 TTT2T 296 43752 88 4JT4T 188 6655T 629 QQ333 858 2J959 793 69QK2 743 K8628 196 26266 75 Q6996 635 3J553 440 79957 964 Q2J9A 130 AQQ66 847 Q5Q8J 856 6777Q 568 44JJ4 841 46236 802 88898 683 787KK 616 QT9T5 625 4AK27 889 66624 913 23JJ3 118 J88J9 816 KAJQ6 454 J8876 171 2222J 493 TK5T5 624 KQQQT 319 2KK2K 360 28829 757 AATJT 205 8KAAQ 514 J8964 845 39K56 958 7J735 326 9376T 571 978T4 389 J944Q 180 J5422 380 63696 495 KQ2QK 924 46564 438 5J5K7 8 TTT58 113 JJ99J 598 J3KQT 109 K9AA9 276 69T99 116 747Q4 411 J2934 918 4AA34 707 23293 255 335J3 178 394JK 570 A5KAT 836 63863 144 T83J2 257 J77J7 792 88829 499 69667 382 5A448 520 73TK2 258 85A2J 528 T9489 975 T68TA 56 T89TT 730 JJJ8J 317 KA7AA 316 22J2J 312 7T5KJ 967 66K36 714 48844 855 7A5A2 808 QKQKQ 786 QQQ4Q 498 7J77Q 42 KTK8J 870 75454 271 73327 502 T66TT 971 T7957 509 47243 365 6QA4K 297 K9232 737 88AT8 26 45455 588 86868 181 76666 147 46676 311 69695 199 7JJ9A 742 33632 73 46KKK 885 AA56K 87 77776 580 QQ996 139 73479 694 A7AJJ 735 62226 101 87777 798 9JQ99 102 A7K86 688 Q3233 773 TJ9TT 787 8QTQQ 947 J6T65 449 779J7 49 Q66KQ 890 77752 706 66566 779 K6K6K 269 K7K38 415 88774 328 5J555 672 99969 283 Q3Q3Q 663 67Q8T 186 A89A9 503 8T87Q 669 69K87 264 69996 112 AAQ7A 811 885QT 709 TJ734 988 7Q7QQ 977 K335T 928 Q78AQ 432 8444J 679 66663 140 24966 978 2847Q 321 55266 659 AAJAA 842 3J883 877 49992 371 34633 111 AA8AA 353 9A998 788 4KKJ4 175 66J86 562 67AJ6 719 A62A9 129 47AA4 591 29592 739 82A8A 565 33324 634 49QKJ 425 Q244Q 664 4A96Q 23 59955 22 KKK8A 222 974KT 752 T22TT 727 J3383 231 TA7K2 831 99AAA 603 6TTQK 899 4K444 477 33939 809 A77AA 545 T66K6 417 775QQ 343 7A7K7 641 7JJ66 388 T7666 34 QQQ39 904 T2352 95 94994 266 K88TT 636 94996 209 9T9AT 898 JTT4T 13 A8J3Q 984 64666 78 49J44 501 TA558 593 29KT6 973 5TK6T 662 55575 169 QA39K 900 89QJ4 648 T8QA5 349 7Q997 902 3AT6Q 693 KJ84K 284 69AAA 327 45444 911 83933 878 QJJQJ 650 A3A5A 927 KJ99Q 489 8Q5J5 470 997J3 467 4A973 35 76677 115 63JA7 100 68558 282 TT7TA 822 QTJ5K 666 ATJQK 128 AA88A 424 T6966 497 59TJQ 430 3355K 660 TK8A7 253 2T772 368 K7935 760 82A36 197 KTTK5 604 KJKJK 132 5JQ52 523 A22QQ 122 JAA99 725 A4Q52 369 9922T 141 933Q3 484 T456Q 617 33933 308 55545 346 KKK4K 329 JA48Q 547 87289 893 84388 134 8TJ8T 456 A34QT 987 TK4JA 968 Q9Q9T 722 T6AJA 950 4K4K8 303 6Q4Q2 285 TTQTT 63 2Q9J7 647 5A5A4 813 88T8T 933 Q9KQQ 246 253Q5 692 3T926 487 2249A 6 99AT7 413 J2KA5 422 9QQ89 994 72288 546 28A34 997 4Q668 334 32J33 12 836T4 982 58888 517 6K6QK 575 Q5384 170 Q6333 825 2934A 869 69274 645 8T89K 356 Q9JQ9 837 9K5K5 161 488QQ 194 3T3TT 461 83Q52 939 9Q443 451 K6275 414 3Q7Q3 700 47777 435 22228 469 QQ4QJ 868 A666A 995 7AJ3A 210 254AJ 785 77222 794 33A35 66 25257 165 6535J 195 K5K55 586 87A62 584 TTKTT 815 KAQ85 594 8AAKJ 43 86683 838 KJJKJ 704 64TQ6 867 T5TTT 843 25255 3 QTJ3J 261 QKT2T 639 33K33 516 J5JJ4 372 4T2J6 59 69235 777 334T2 826 T5J7J 717 64T44 351 KTTKK 703 36238 151 3434J 125 4J744 764 5K38A 656 268JA 71 3J3K8 14 355Q5 513 88JT8 4 8TATJ 357 78J7J 895 K797K 854 9K889 799 846A4 15 K6K57 732 42A22 21 4KK9K 120 42454 53 66JQ6 646 KKKQK 119 53395 560 74TQA 783 QQQ85 40 6QK48 114 TQT2A 830 7JQ97 494 66828 833 46644 962 T4T88 236 55Q55 84 22QQ9 879 6T5JJ 549 263T6 632 K66AK 338 86J86 262 K3977 772 66Q66 215 3TTJ3 238 J44JK 201 34442 970 J79K9 849 5558J 287 9J9Q3 159 AAA22 182 TQ3K6 293 Q88Q3 245 67576 227 28JQ5 943 33AKA 961 676J6 1000 J72A7 381 2973J 458 AK2J7 930 5QQA2 510 TTK4T 7 Q3QQ7 754 9T99A 812 45Q44 942 3KKKK 542 2AA22 807 66JJJ 361 82283 202 88J88 25 64466 320 K3J96 614 T97T9 85 3JK93 54 4Q9TQ 887 977QK 908 J72JJ 486 A2Q2A 98 7K7AK 697 T656T 292 A3TTQ 404 66KK6 408 9Q26A 874 J33KK 117 Q2224 608 4K4Q2 137 23322 876 JKQKK 685 95QJK 219 7877J 538 666TT 804 742K5 223 JJAAA 500 A4888 348 TQQQT 791 885T5 301 8AQ83 55 5J6A2 864 9AKK9 410 8J9J7 376 444Q4 226 77722 96 6J88A 27 TTTJT 298 TJKA5 288 A8A8J 36 K7QJ6 723 3KK3K 344 2624K 512 36336 681 55J25 552 76T86 38 K9J6Q 204 TA26Q 11 55TT8 460 TQ47K 472 2T3A5 920 5J6K6 859 79994 504 7685Q 862 4TQ44 803 484Q8 747 J33T3 387 QT6TQ 148 56J86 582 K3Q4K 490 9A9A9 479 A3AT3 919 58785 637 2A8A2 172 2Q755 307 K9798 278 JK2TA 252 345J2 710 9J339 957 K9949 999 Q5Q49 665 3A69K 780 25QQ2 81 J2944 621 8T3KT 715 8KT5K 154 A4K7T 275 4TA5A 363 43K8J 335 3TT83 91 6J256 341 K7A4A 330 9Q939 765 9999K 563 JJ878 10 A36AA 273 33336 256 44484 894 7KK6K 871 JTQ5J 795 848J8 991 2AKAA 687 99444 776 T464K 768 4444A 759 8J6K8 445 TQ49A 429 585A8 198 6K5K3 551 47444 392 6J378 755 77672 439 66866 459 3AQ5J 441 92QAK 220 QJJ66 738 2K37A 176 T5TJT 406 85JJA 39 22775 618 3JT55 77 3K32Q 240 72333 434 JJTTT 419 QK29K 105 J5K64 940 KKKKJ 566 T4T52 579 777J2 741 Q7QQQ 506 94Q72 853 7QJQQ 713 TJ95J 153 55328 782 AT934 613 3679K 676 8T528 525 8562T 124 36T99 86 Q77Q2 573 23J52 218 JT8J6 921 7KT77 121 63T83 753 273T8 602 99499 607 9994Q 527 AQ72A 420 QJQQQ 770 2A94A 355 6JKJ6 775 73QTT 561 JTT8T 106 JTJA3 620 JK247 810 QJJKQ 819 633K3 5 88228 910 7QJQ3 619 Q448Q 784 83599 482 48QQ9 299 9993T 228 ATTTA 385 J2982 232 84864 234 J664J 123 4A6TQ 281 K249A 51 J9Q37 884 TTT3T 350 884T7 682 66868 745 4K7Q4 89 5KK3J 149 A8444 744 3A8T9 951 3AA99 557 KK823 705 222TT 872 44TT4 611 J3QJ3 912 AQAT7 28 T5Q5Q 536 KK5K5 384 TT88T 455 28J98 972 9988A 979 79767 835 T5JTK 213 KK7JJ 126 T78J6 44 A3KJA 986 8JT77 990 366JJ 736 Q9A43 559 6Q6QT 689 AA5A5 471 59TAJ 901 J369T 304 97J8A 892 83333 980 2A57J 965 2KJ95 644 64J44 597 4KJ44 152 8282J 70 3Q333 761 JT753 99 T44TA 200 727K7 447 AA5AA 241 AAA56 905 QQQJJ 68 K7Q95 596 487K5 142 5J64A 251 466J6 699 999J7 531 A89K6 127 55J56 464 8786K 818 967TA 774 KJ7Q4 110 75535 767 K9572 746 797TA 749 244TQ 569 88QJ8 302 2J522 57 KAAK7 72 TKKK7 377 28547 766 37877 996 776K7 907 J26J9 138 QK235 362 6Q297 601 38QJ8 131 33TJ5 740 K8888 314 85A2A 58 6329Q 944 5A273 519 76786 731 72AA7 166 9TJT9 728 T6TQ6 145 86885 446 J5595 935 AA839 834 999KJ 358 T7Q77 212 K8K8Q 399 9T8QK 224 83J3J 643 7T84K 708 2TT8T 189 JTK9T 279 T999T 936 22KKA 671 9599Q 649 KKK8T 574 28282 828 9438T 97 2968J 698 3Q4Q3 667 83222 623 86QJQ 453 TT7AA 805 86JAQ 589 85655 485 4466K 163 QAAAQ 160 K9393 366 85558 642 49JJ4 840 JTQ7T 480 Q6QQQ 418 337Q2 801 88789 925 564KA 505 T829Q 405 4AT77 896 TAAA8 507 9AAAA 62 7J766 286 J88J8 937 Q4Q35 216 7888K 19 4969A 367 44224 289 T3338 600 T5T59 259 5KJ6A 465 A4AA8 61 49948 675 223Q2 280 QTK4A 268 756AK 839 7A4QJ 903 69577 518 29TQ2 790 29K4T 69 55665 750 239T5 832 A2522 521 TA77T 306 J3QK2 452 6JKK6 390 98T72 1 2KQA8 179 98989 431 75757 76 9J99T 29 T2TJJ 183 2AAT9 532 22QQ2 235 7452Q 254 5899J 949 53TT5 462 35566 652 3A398 914 Q772T 400 7J777 374 53353 535 J462Q 851 J28TQ 32 24888 225 55535 684 J353J 83 K226J 395 8TJ99 45 Q2943 860 2A6KA 959 Q7227 631 55556 883 AA444 983 T97AJ 265 8764Q 934 2Q62Q 263 74377 875 K7KA2 758 TAA9A 443 3T4J2 989 T6TTT 701 5QT4K 592 6969J 578 77TTT 556 A86K3 364 T55A5 909 68355 442 77392 393 A85Q8 605 994A9 359 2J7T7 661 2A662 214 4939J 630 7A6J5 848 4K9A6 748 723Q9 932 55A55 206 T2J6T 873 3789A 583 3A82K 891 K9K99 953 K38K3 33 53493 756 T3TT8 929 4T4TT 437 62762 481 73T77 90 T8973 530 55558 861 45762 496 77KKK 107 J55J4 554 777Q8 537 26666 60 JT7TT 690 438K5 184 997J4 817 65777 162 J8467 543 A3AA3 103 677JJ 274 JTT66 421 66J66 478 A59AK 412 777T7 426 664QK 474 QT837 294 8727A 969 596T5 17 22K26 397 75477 585 66696 917 K8T9J 407 AA7AA 135 36676 716 72T56 2 36636 221 99789 92 2AK9T 249 Q5255 444 934A9 952 48K48 242 49A4A 966 Q84K9 457 55J5T 948 8AJ95 108 TJ7Q6 612 QQ2QJ 323 TQT68 720 Q57KT 587 34444 143 644A4 403 849TJ 733 JAK7K 342 6QKQ5 711 7J7Q3 581 9A83J 492 337J3 20 T6AKT 190 2488J 104 A4KK4 427 7988T 164 966A6 300 TQ4QA 352 K9KJK 654 37733 670 6TJK6 30 92242 433 95553 508 93399 511 6QT66 880 J7AA7 751 QA9KQ 177 72233 248 K88KK 640 2Q5JQ 544 JJ333 897 T75T7 938 A8JA7 797 73777 24 88899 771 38AAA 333 62347 627 2A888 821 JTKAK 590 286T6 572 36T63 577 22248 985 23332 658 4T3JT 655 22J27 52 248KA 173 JK2Q6 992 68T3Q 550 82299 409 96Q3J 702 QQQQA 345 4QQQT 185 4TK4J 331 J4444 882 A2555 778 9292J 230 22232 668 K64K4 193 82434 207 5Q5Q9 724 K56K6 954 QK2KK 37 Q9937 47 8AA88 976 A5994 208 3A3KK 174 99J36 41 98599 322 8AK59 46 55Q88 375 337TQ 65 T7TTT 696 QQ663 476 2J842 888 96Q47 192 23579 396 6TT7T 844 4T444 865 44554 886 2KK5K 622 K39KA 133 46J79 827 5QKK5 923 K585K 237 77799 633 J9Q2Q 50 3J773 491 QQ8Q8 247 K96TK 187 32T98 475 K8K88 383 8887J 678 5J37A 595 44AAJ 448 JJJJJ 762 27797 628 Q55Q5 555 KKAK4 998 8ATQ3 315 23335 881 AKKAA 332 66J6J 217 Q4Q99 80 99JJ9 721 62Q6Q 9 249TA 423 444JT 398 A93JK 146 2A722 524 3275T 553 T4TTT 800 49K4K 610 2J332 347 KK222 64 J5888 67 22KAA 354 2K3J7 515 8A257 463 K4448 769 25648 606 92992 657 38KA8 295 9999J 233 72222 416 QQQ95 136 323JT 993 7A727 93 777Q2 548 TAKKK 534 677J7 339 Q3J3Q 651 Q3JT8 324 32JQQ 974 Q44QJ 529 77797 488 TQAK3 926 56TJT 203 A8QQT 712 AJ32K 609 5A995 677 55Q59 428 42492 277 T62T2 931 58885 558 T73T3 270 T8T56 391 T3949 956 5Q5T2 386 9985Q 267 KK333 526 3JJTT 318 4A44J 450 2K9TK 48 K63JA 74 779A5 695 94J59 945 Q6J57 272 88638 150 24A4A 373 T6J86 168 A3322 239 KJ777 211 23K55 340 KTK66 402 QQ57Q 680 Q8888 336 33533 468 TTQT7 370 222K2 167 TTT99 866 K93K9 157 5TTT2 564 K4K4K 540 7894J 599 Q3QQQ 310 2JTTT 781 T67JT 260 42K3T 955 88Q68 829 57257 729 96625 922 4KAJK 638 34338 806 JJ2AK 18 7777Q 916 3TKA8 823 J3352 156 88788 941 3J4A6 313 QKQKK 963 822TT 863 49545 16 TK3J6 691 A555J 337 754KQ 541 26398 539 44222 325 2JT25 522 KK9KT 734 799QQ 473 434J4 305 69686 915 T8853 244 333J3 814 56J5T 379 26785 726 977QQ 960 66AJA 155 JTJT5 850 5JJ55 686 8K839 857 87K35 820 2KKKK 191 5A8QA 674 622T6 763 Q6QQ4 378 J2A62 981 Q5J5Q 567 79853 94 KJ888 718 A8957 789 37A37 483 KKAAK 852 34Q8K 291 84287 31 7K53J 394 95599 290 AKAAA 824 5546T 615 QQTT2 796 J3552 82 6K76K 436 3TJTT 533 T4729 243 55T5Q 846 52262 250 4KA46 309 7A8A8 466 76KK3 906 TTT8T 79`)49:[] 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483`)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":22,"value":"inputs = ({\n test: test1,\n real: input\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"meta = AOC.meta({\n day: 7,\n year: 23,\n title: \"Camel Cards\",\n parse,\n inputs,\n parts: [part1, part2],\n expected: { test: [6440, 5905], real: [249748283, 248029057] },\n href: \"https://observablehq.com/@a1ip/aoc-2023-day-7\"\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":13,"value":"AOC.style()","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":5,"value":"import { AOC } from \"@a1ip/aoc-2023-utilities\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W49","stdlib":"1"}} 45:"$44:body"