Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
160676 周谨严 12序列的第n项 C++ Compile Error 0 MS 0 KB 146 2026-09-26 10:20:12

Tests(0/0):

Code:

#include(iostream) using namespace std; int main(){ int a=1; int n; cin>>n; for(int i=0;i<n-1;i++){ a = a+i; } cout<<a<<endl; }

Run Info:

Main.cc:1:9: error: #include expects "FILENAME" or 
 #include(iostream) 
         ^
Main.cc: In function 'int main()':
Main.cc:6:2: error: 'cin' was not declared in this scope
  cin>>n;
  ^
Main.cc:10:2: error: 'cout' was not declared in this scope
  cout<