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E. Intercity Travelling time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Leha is planni 阅读全文
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Let's call an undirected graph G=(V,E)G=(V,E) relatively prime if and only if for each edge (v,u)∈E(v,u)∈E GCD(v,u)=1GCD(v,u)=1 (the greatest common d 阅读全文
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C. Annoying Present time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Annoying Present 阅读全文
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B. Minimum Ternary String time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a 阅读全文