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A Vasya studies music.He has learned lots of interesting stuff. For example, he knows that there are 12 notes: C, C#, D, D#, E, F, F#, G, G#, A, B, H. 阅读全文
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A - A CodeForces - 136A 题解:按输入的顺序输出对应的下标即可,定义一个数组,将输入的作为下标,下标为值,最后依次输出即可; #include<bits/stdc++.h> using namespace std; int main() { int n; cin>>n; int 阅读全文
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D - D CodeForces - 743A Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as e 阅读全文
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B - B Polycarp loves lowercase letters and dislikes uppercase ones. Once he got a string s consisting only of lowercase and uppercase Latin letters. L 阅读全文
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D - Drinks Choosing Old timers of Summer Informatics School can remember previous camps in which each student was given a drink of his choice on the v 阅读全文