Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
107285 石晋骁 合法的标识符 C++ Wrong Answer 1 MS 280 KB 391 2025-01-17 15:20:05

Tests(9/10):

Code:

#include<bits/stdc++.h> using namespace std; string s; int main(){ cin >> s; if(s[0] >= '0' && s[0] <= '9'){ cout << "no"; return 0; } for(int i = 1;i < s.size();i++){ if((s[i] >= 'A' || s[i] <= 'Z') || (s[i] >= 'a' || s[i] <= 'z') || (s[i] >= '0' || s[i] <= '9') || (s[i] == '_')){ }else{ cout << "no"; return 0; } } cout << "yes"; return 0; }

Run Info:

------Input------

a_b!d

------Answer-----

no

------Your output-----

yes