guux
https://blog.hatena.ne.jp/guux/
De.HP
https://guutare.hatenadiary.com/
解答 A. Fifty-Fifty atcoder.jpmap で文字の数を数えた。map のサイズと一つの要素の数が 2 であれば、"Yes" になります。 #include<bits/stdc++.h> using namespace std; int main(){ char c; map<char, int> S; for(int i = 0; i < 4; i++){ cin >> c; S[c]++; } if(S.size() == 2 && S[c] == 2){ cout << "Yes" << endl; return 0; } cout << "No" << endl; …
190
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Hatena Blog
https://hatena.blog
2020-05-21 21:12:03
Atcoder Beginners Contest(A. Fifty-Fifty / B. Ordinary Number / C. Divide the Problems)
rich
https://guutare.hatenadiary.com/entry/2020/05/21/211203
1.0
100%