79921

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
79921	sh25_guwz	[在线测评解答教程] 求和	C++	Wrong Answer	0 MS	244 KB	178	2026-01-04 14:52:06

#include<bits/stdc++.h> using namespace std; int main() { int n,sum=0; cin>>n; for(int i=0;i<n;i++){ sum=sum+i; } cout<<sum; return 0; }