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values | native_id stringlengths 3 7 | title stringlengths 2 64 | url stringlengths 36 49 | tags listlengths 0 11 | time_limit_ms null | memory_limit_mb null | io_type stringclasses 1
value | difficulty_rating int64 800 3.5k ⌀ | stats dict | last_scraped_at stringclasses 2
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|---|---|---|---|---|---|---|---|---|---|---|---|
codeforces:85-B | codeforces | 85-B | Embassy Queue | https://codeforces.com/problemset/problem/85/B | [
"data structures",
"greedy"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 1077
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:85-A | codeforces | 85-A | Domino | https://codeforces.com/problemset/problem/85/A | [
"constructive algorithms",
"implementation"
] | null | null | stdin_stdout | 1,300 | {
"solved_count": 2008
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:84-C | codeforces | 84-C | Biathlon | https://codeforces.com/problemset/problem/84/C | [
"binary search",
"implementation"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 1836
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:84-A | codeforces | 84-A | Toy Army | https://codeforces.com/problemset/problem/84/A | [
"math",
"number theory"
] | null | null | stdin_stdout | 900 | {
"solved_count": 16585
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:83-E | codeforces | 83-E | Two Subsequences | https://codeforces.com/problemset/problem/83/E | [
"bitmasks",
"dp"
] | null | null | stdin_stdout | 2,800 | {
"solved_count": 533
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:83-D | codeforces | 83-D | Numbers | https://codeforces.com/problemset/problem/83/D | [
"dp",
"math",
"number theory"
] | null | null | stdin_stdout | 2,400 | {
"solved_count": 1029
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:83-C | codeforces | 83-C | Track | https://codeforces.com/problemset/problem/83/C | [
"graphs",
"greedy",
"shortest paths"
] | null | null | stdin_stdout | 2,400 | {
"solved_count": 469
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:83-B | codeforces | 83-B | Doctor | https://codeforces.com/problemset/problem/83/B | [
"binary search",
"math",
"sortings"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 1886
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:83-A | codeforces | 83-A | Magical Array | https://codeforces.com/problemset/problem/83/A | [
"math"
] | null | null | stdin_stdout | 1,300 | {
"solved_count": 6839
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:82-E | codeforces | 82-E | Corridor | https://codeforces.com/problemset/problem/82/E | [
"geometry"
] | null | null | stdin_stdout | 2,600 | {
"solved_count": 246
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:82-D | codeforces | 82-D | Two out of Three | https://codeforces.com/problemset/problem/82/D | [
"dp"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 2296
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:82-C | codeforces | 82-C | General Mobilization | https://codeforces.com/problemset/problem/82/C | [
"data structures",
"dfs and similar",
"sortings"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 868
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:82-B | codeforces | 82-B | Sets | https://codeforces.com/problemset/problem/82/B | [
"constructive algorithms",
"hashing",
"implementation"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 2329
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:82-A | codeforces | 82-A | Double Cola | https://codeforces.com/problemset/problem/82/A | [
"implementation",
"math"
] | null | null | stdin_stdout | 1,100 | {
"solved_count": 32175
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:81-E | codeforces | 81-E | Pairs | https://codeforces.com/problemset/problem/81/E | [
"dfs and similar",
"dp",
"dsu",
"graphs",
"implementation",
"trees"
] | null | null | stdin_stdout | 2,700 | {
"solved_count": 395
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:81-D | codeforces | 81-D | Polycarp's Picture Gallery | https://codeforces.com/problemset/problem/81/D | [
"constructive algorithms",
"greedy"
] | null | null | stdin_stdout | 2,100 | {
"solved_count": 804
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:81-C | codeforces | 81-C | Average Score | https://codeforces.com/problemset/problem/81/C | [
"greedy",
"math",
"sortings"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 1848
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:81-B | codeforces | 81-B | Sequence Formatting | https://codeforces.com/problemset/problem/81/B | [
"implementation",
"strings"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 2137
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:81-A | codeforces | 81-A | Plug-in | https://codeforces.com/problemset/problem/81/A | [
"implementation"
] | null | null | stdin_stdout | 1,400 | {
"solved_count": 13723
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:80-B | codeforces | 80-B | Depression | https://codeforces.com/problemset/problem/80/B | [
"geometry",
"math"
] | null | null | stdin_stdout | 1,200 | {
"solved_count": 4986
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:80-A | codeforces | 80-A | Panoramix's Prediction | https://codeforces.com/problemset/problem/80/A | [
"brute force"
] | null | null | stdin_stdout | 800 | {
"solved_count": 65875
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:79-E | codeforces | 79-E | Security System | https://codeforces.com/problemset/problem/79/E | [
"math"
] | null | null | stdin_stdout | 2,900 | {
"solved_count": 160
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:79-D | codeforces | 79-D | Password | https://codeforces.com/problemset/problem/79/D | [
"bitmasks",
"dp",
"shortest paths"
] | null | null | stdin_stdout | 2,800 | {
"solved_count": 1336
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:79-C | codeforces | 79-C | Beaver | https://codeforces.com/problemset/problem/79/C | [
"data structures",
"dp",
"greedy",
"hashing",
"strings",
"two pointers"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 2074
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:79-B | codeforces | 79-B | Colorful Field | https://codeforces.com/problemset/problem/79/B | [
"implementation",
"sortings"
] | null | null | stdin_stdout | 1,400 | {
"solved_count": 7971
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:79-A | codeforces | 79-A | Bus Game | https://codeforces.com/problemset/problem/79/A | [
"greedy"
] | null | null | stdin_stdout | 1,200 | {
"solved_count": 4535
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:78-E | codeforces | 78-E | Evacuation | https://codeforces.com/problemset/problem/78/E | [
"flows",
"graphs",
"shortest paths"
] | null | null | stdin_stdout | 2,300 | {
"solved_count": 692
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:78-D | codeforces | 78-D | Archer's Shot | https://codeforces.com/problemset/problem/78/D | [
"binary search",
"geometry",
"math",
"two pointers"
] | null | null | stdin_stdout | 2,300 | {
"solved_count": 369
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:78-C | codeforces | 78-C | Beaver Game | https://codeforces.com/problemset/problem/78/C | [
"dp",
"games",
"number theory"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 2163
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:78-B | codeforces | 78-B | Easter Eggs | https://codeforces.com/problemset/problem/78/B | [
"constructive algorithms",
"implementation"
] | null | null | stdin_stdout | 1,200 | {
"solved_count": 15291
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:78-A | codeforces | 78-A | Haiku | https://codeforces.com/problemset/problem/78/A | [
"implementation",
"strings"
] | null | null | stdin_stdout | 800 | {
"solved_count": 15385
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:77-E | codeforces | 77-E | Martian Food | https://codeforces.com/problemset/problem/77/E | [
"geometry"
] | null | null | stdin_stdout | 2,800 | {
"solved_count": 419
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:77-D | codeforces | 77-D | Domino Carpet | https://codeforces.com/problemset/problem/77/D | [
"dp",
"implementation"
] | null | null | stdin_stdout | 2,300 | {
"solved_count": 362
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:77-C | codeforces | 77-C | Beavermuncher-0xFF | https://codeforces.com/problemset/problem/77/C | [
"dfs and similar",
"dp",
"dsu",
"greedy",
"trees"
] | null | null | stdin_stdout | 2,100 | {
"solved_count": 1166
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:77-B | codeforces | 77-B | Falling Anvils | https://codeforces.com/problemset/problem/77/B | [
"math",
"probabilities"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 2857
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:77-A | codeforces | 77-A | Heroes | https://codeforces.com/problemset/problem/77/A | [
"brute force",
"implementation"
] | null | null | stdin_stdout | 1,400 | {
"solved_count": 1938
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:76-F | codeforces | 76-F | Tourist | https://codeforces.com/problemset/problem/76/F | [
"binary search",
"data structures",
"dp"
] | null | null | stdin_stdout | 2,300 | {
"solved_count": 765
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:76-E | codeforces | 76-E | Points | https://codeforces.com/problemset/problem/76/E | [
"implementation",
"math"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 1888
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:76-D | codeforces | 76-D | Plus and xor | https://codeforces.com/problemset/problem/76/D | [
"dp",
"greedy",
"math"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 2397
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:76-C | codeforces | 76-C | Mutation | https://codeforces.com/problemset/problem/76/C | [
"bitmasks",
"dp",
"math"
] | null | null | stdin_stdout | 2,700 | {
"solved_count": 368
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:76-B | codeforces | 76-B | Mice | https://codeforces.com/problemset/problem/76/B | [
"greedy",
"two pointers"
] | null | null | stdin_stdout | 2,100 | {
"solved_count": 799
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:76-A | codeforces | 76-A | Gift | https://codeforces.com/problemset/problem/76/A | [
"dsu",
"graphs",
"sortings",
"trees"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 2125
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:75-E | codeforces | 75-E | Ship's Shortest Path | https://codeforces.com/problemset/problem/75/E | [
"geometry",
"shortest paths"
] | null | null | stdin_stdout | 2,400 | {
"solved_count": 299
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:75-D | codeforces | 75-D | Big Maximum Sum | https://codeforces.com/problemset/problem/75/D | [
"data structures",
"dp",
"greedy",
"implementation",
"math",
"trees"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 2045
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:75-C | codeforces | 75-C | Modified GCD | https://codeforces.com/problemset/problem/75/C | [
"binary search",
"number theory"
] | null | null | stdin_stdout | 1,600 | {
"solved_count": 15500
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:75-B | codeforces | 75-B | Facetook Priority Wall | https://codeforces.com/problemset/problem/75/B | [
"expression parsing",
"implementation",
"strings"
] | null | null | stdin_stdout | 1,500 | {
"solved_count": 3614
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:75-A | codeforces | 75-A | Life Without Zeros | https://codeforces.com/problemset/problem/75/A | [
"implementation"
] | null | null | stdin_stdout | 1,000 | {
"solved_count": 29606
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:74-E | codeforces | 74-E | Shift It! | https://codeforces.com/problemset/problem/74/E | [
"constructive algorithms"
] | null | null | stdin_stdout | 2,800 | {
"solved_count": 184
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:74-D | codeforces | 74-D | Hanger | https://codeforces.com/problemset/problem/74/D | [
"data structures"
] | null | null | stdin_stdout | 2,400 | {
"solved_count": 410
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:74-C | codeforces | 74-C | Chessboard Billiard | https://codeforces.com/problemset/problem/74/C | [
"dfs and similar",
"dsu",
"graphs",
"number theory"
] | null | null | stdin_stdout | 2,100 | {
"solved_count": 1409
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:74-B | codeforces | 74-B | Train | https://codeforces.com/problemset/problem/74/B | [
"dp",
"games",
"greedy"
] | null | null | stdin_stdout | 1,500 | {
"solved_count": 1728
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:74-A | codeforces | 74-A | Room Leader | https://codeforces.com/problemset/problem/74/A | [
"implementation"
] | null | null | stdin_stdout | 1,000 | {
"solved_count": 5811
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:73-F | codeforces | 73-F | Plane of Tanks | https://codeforces.com/problemset/problem/73/F | [
"brute force",
"geometry"
] | null | null | stdin_stdout | 2,900 | {
"solved_count": 106
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:73-E | codeforces | 73-E | Morrowindows | https://codeforces.com/problemset/problem/73/E | [
"math",
"number theory"
] | null | null | stdin_stdout | 2,400 | {
"solved_count": 407
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:73-D | codeforces | 73-D | FreeDiv | https://codeforces.com/problemset/problem/73/D | [
"dfs and similar",
"graphs",
"greedy"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 754
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:73-C | codeforces | 73-C | LionAge II | https://codeforces.com/problemset/problem/73/C | [
"dp"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 2480
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:73-B | codeforces | 73-B | Need For Brake | https://codeforces.com/problemset/problem/73/B | [
"binary search",
"greedy",
"sortings"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 545
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:73-A | codeforces | 73-A | The Elder Trolls IV: Oblivon | https://codeforces.com/problemset/problem/73/A | [
"greedy",
"math"
] | null | null | stdin_stdout | 1,600 | {
"solved_count": 1631
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-I | codeforces | 72-I | Goofy Numbers | https://codeforces.com/problemset/problem/72/I | [
"*special",
"implementation"
] | null | null | stdin_stdout | 1,500 | {
"solved_count": 482
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-H | codeforces | 72-H | Reverse It! | https://codeforces.com/problemset/problem/72/H | [
"*special",
"implementation"
] | null | null | stdin_stdout | 1,600 | {
"solved_count": 284
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-G | codeforces | 72-G | Fibonacci army | https://codeforces.com/problemset/problem/72/G | [
"*special",
"dp"
] | null | null | stdin_stdout | 1,000 | {
"solved_count": 2817
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-F | codeforces | 72-F | Oil | https://codeforces.com/problemset/problem/72/F | [
"*special",
"greedy",
"math"
] | null | null | stdin_stdout | 1,900 | {
"solved_count": 143
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-E | codeforces | 72-E | Ali goes shopping | https://codeforces.com/problemset/problem/72/E | [
"*special",
"brute force",
"strings"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 181
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-D | codeforces | 72-D | Perse-script | https://codeforces.com/problemset/problem/72/D | [
"*special",
"expression parsing"
] | null | null | stdin_stdout | 2,300 | {
"solved_count": 83
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-C | codeforces | 72-C | Extraordinarily Nice Numbers | https://codeforces.com/problemset/problem/72/C | [
"*special",
"math"
] | null | null | stdin_stdout | 1,200 | {
"solved_count": 1051
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-B | codeforces | 72-B | INI-file | https://codeforces.com/problemset/problem/72/B | [
"*special",
"implementation"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 117
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:72-A | codeforces | 72-A | Goshtasp, Vishtasp and Eidi | https://codeforces.com/problemset/problem/72/A | [
"*special",
"greedy",
"math"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 194
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:71-E | codeforces | 71-E | Nuclear Fusion | https://codeforces.com/problemset/problem/71/E | [
"bitmasks",
"dp"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 938
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:71-D | codeforces | 71-D | Solitaire | https://codeforces.com/problemset/problem/71/D | [
"brute force",
"implementation"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 764
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:71-C | codeforces | 71-C | Round Table Knights | https://codeforces.com/problemset/problem/71/C | [
"dp",
"math",
"number theory"
] | null | null | stdin_stdout | 1,600 | {
"solved_count": 7303
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:71-B | codeforces | 71-B | Progress Bar | https://codeforces.com/problemset/problem/71/B | [
"implementation",
"math"
] | null | null | stdin_stdout | 1,300 | {
"solved_count": 5250
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:71-A | codeforces | 71-A | Way Too Long Words | https://codeforces.com/problemset/problem/71/A | [
"strings"
] | null | null | stdin_stdout | 800 | {
"solved_count": 499475
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:70-E | codeforces | 70-E | Information Reform | https://codeforces.com/problemset/problem/70/E | [
"dp",
"implementation",
"trees"
] | null | null | stdin_stdout | 2,700 | {
"solved_count": 585
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:70-D | codeforces | 70-D | Professor's task | https://codeforces.com/problemset/problem/70/D | [
"data structures",
"geometry"
] | null | null | stdin_stdout | 2,700 | {
"solved_count": 1089
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:70-C | codeforces | 70-C | Lucky Tickets | https://codeforces.com/problemset/problem/70/C | [
"binary search",
"data structures",
"sortings",
"two pointers"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 627
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:70-B | codeforces | 70-B | Text Messaging | https://codeforces.com/problemset/problem/70/B | [
"expression parsing",
"greedy",
"strings"
] | null | null | stdin_stdout | 1,600 | {
"solved_count": 2097
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:70-A | codeforces | 70-A | Cookies | https://codeforces.com/problemset/problem/70/A | [
"math"
] | null | null | stdin_stdout | 1,300 | {
"solved_count": 3536
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:69-E | codeforces | 69-E | Subsegments | https://codeforces.com/problemset/problem/69/E | [
"data structures",
"implementation"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 5063
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:69-D | codeforces | 69-D | Dot | https://codeforces.com/problemset/problem/69/D | [
"dp",
"games"
] | null | null | stdin_stdout | 1,900 | {
"solved_count": 1125
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:69-C | codeforces | 69-C | Game | https://codeforces.com/problemset/problem/69/C | [
"implementation"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 670
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:69-B | codeforces | 69-B | Bets | https://codeforces.com/problemset/problem/69/B | [
"greedy",
"implementation"
] | null | null | stdin_stdout | 1,200 | {
"solved_count": 3605
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:69-A | codeforces | 69-A | Young Physicist | https://codeforces.com/problemset/problem/69/A | [
"implementation",
"math"
] | null | null | stdin_stdout | 1,000 | {
"solved_count": 201094
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:68-E | codeforces | 68-E | Contact | https://codeforces.com/problemset/problem/68/E | [
"geometry"
] | null | null | stdin_stdout | 2,900 | {
"solved_count": 83
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:68-D | codeforces | 68-D | Half-decay tree | https://codeforces.com/problemset/problem/68/D | [
"data structures",
"divide and conquer",
"dp",
"math",
"probabilities"
] | null | null | stdin_stdout | 2,500 | {
"solved_count": 530
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:68-C | codeforces | 68-C | Synchrophasotron | https://codeforces.com/problemset/problem/68/C | [
"brute force"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 349
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:68-B | codeforces | 68-B | Energy exchange | https://codeforces.com/problemset/problem/68/B | [
"binary search"
] | null | null | stdin_stdout | 1,600 | {
"solved_count": 5545
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:68-A | codeforces | 68-A | Irrational problem | https://codeforces.com/problemset/problem/68/A | [
"implementation",
"number theory"
] | null | null | stdin_stdout | 1,100 | {
"solved_count": 5349
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:67-E | codeforces | 67-E | Save the City! | https://codeforces.com/problemset/problem/67/E | [
"geometry"
] | null | null | stdin_stdout | 2,500 | {
"solved_count": 338
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:67-D | codeforces | 67-D | Optical Experiment | https://codeforces.com/problemset/problem/67/D | [
"binary search",
"data structures",
"dp"
] | null | null | stdin_stdout | 1,900 | {
"solved_count": 1769
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:67-C | codeforces | 67-C | Sequence of Balls | https://codeforces.com/problemset/problem/67/C | [
"dp"
] | null | null | stdin_stdout | 2,600 | {
"solved_count": 742
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:67-B | codeforces | 67-B | Restoration of the Permutation | https://codeforces.com/problemset/problem/67/B | [
"greedy"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 939
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:67-A | codeforces | 67-A | Partial Teacher | https://codeforces.com/problemset/problem/67/A | [
"dp",
"graphs",
"greedy",
"implementation"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 2465
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:66-E | codeforces | 66-E | Petya and Post | https://codeforces.com/problemset/problem/66/E | [
"data structures",
"dp"
] | null | null | stdin_stdout | 2,000 | {
"solved_count": 918
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:66-D | codeforces | 66-D | Petya and His Friends | https://codeforces.com/problemset/problem/66/D | [
"constructive algorithms",
"math",
"number theory"
] | null | null | stdin_stdout | 1,700 | {
"solved_count": 3575
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:66-C | codeforces | 66-C | Petya and File System | https://codeforces.com/problemset/problem/66/C | [
"data structures",
"implementation"
] | null | null | stdin_stdout | 1,800 | {
"solved_count": 1181
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:66-B | codeforces | 66-B | Petya and Countryside | https://codeforces.com/problemset/problem/66/B | [
"brute force",
"implementation"
] | null | null | stdin_stdout | 1,100 | {
"solved_count": 23052
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:66-A | codeforces | 66-A | Petya and Java | https://codeforces.com/problemset/problem/66/A | [
"implementation",
"strings"
] | null | null | stdin_stdout | 1,300 | {
"solved_count": 7061
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:65-E | codeforces | 65-E | Harry Potter and Moving Staircases | https://codeforces.com/problemset/problem/65/E | [
"dfs and similar",
"implementation"
] | null | null | stdin_stdout | 2,900 | {
"solved_count": 105
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:65-D | codeforces | 65-D | Harry Potter and the Sorting Hat | https://codeforces.com/problemset/problem/65/D | [
"brute force",
"dfs and similar",
"hashing"
] | null | null | stdin_stdout | 2,200 | {
"solved_count": 477
} | 2026-04-13T03:38:27.662191+00:00 |
codeforces:65-C | codeforces | 65-C | Harry Potter and the Golden Snitch | https://codeforces.com/problemset/problem/65/C | [
"binary search",
"geometry"
] | null | null | stdin_stdout | 2,100 | {
"solved_count": 866
} | 2026-04-13T03:38:27.662191+00:00 |
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