无聊做个入门还CE了
CE:
#include <bits/stdc++.h> using namespace std; int main() { string s; cin >> s; cout << s.size() == 2; return 0; }
AC:
#include <bits/stdc++.h> using namespace std; int main() { string s; cin >> s; cout << (s.size() == 2); return 0; }