31174

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
31174	张予馨	求1+2+3+...	C++	Accepted	0 MS	248 KB	156	2023-11-17 17:07:51

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