Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
150722 胡誉骞 13分苹果 C++ Compile Error 0 MS 0 KB 106 2026-03-30 17:06:23

Tests(0/0):

Code:

int main(){ int n; cin>>n; int sum=0; for(int i=1;i<=n;i++){ sum=sum+i; } cout<<sum; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:3:2: error: 'cin' was not declared in this scope
  cin>>n;
  ^
Main.cc:8:2: error: 'cout' was not declared in this scope
  cout<