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http://codeforces.com/contest/1015/problem/C Ivan has nn songs on his phone. The size of the ii-th song is aiai bytes. Ivan also has a flash drive whi 阅读全文
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http://codeforces.com/contest/1015/problem/B You are given two strings ss and tt. Both strings have length nn and consist of lowercase Latin letters. 阅读全文
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http://codeforces.com/contest/1015/problem/A You are given a set of nn segments on the axis OxOx, each segment has integer endpoints between 11 and mm 阅读全文
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https://pintia.cn/problem-sets/994805342720868352/problems/994805462535356416 Given any string of N (≥) characters, you are asked to form the characte 阅读全文
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https://pintia.cn/problem-sets/994805046380707840/problems/994805138600869888 一个正整数 N 的因子中可能存在若干连续的数字。例如 630 可以分解为 3×5×6×7，其中 5、6、7 就是 3 个连续的数字。给定任一正整 阅读全文
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https://pintia.cn/problem-sets/994805342720868352/problems/994805474338127872 Programming Ability Test (PAT) is organized by the College of Computer S 阅读全文
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https://pintia.cn/problem-sets/994805342720868352/problems/994805476473028608 A number that will be the same when it is written forwards or backwards 阅读全文
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https://pintia.cn/problem-sets/994805342720868352/problems/994805468327690240 Excel can sort records according to any column. Now you are supposed to 阅读全文
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https://pintia.cn/problem-sets/994805342720868352/problems/994805500414115840 It is vitally important to have all the cities connected by highways in 阅读全文