44163

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
44163	张淳睿	求1+2+3+...	C++	Wrong Answer	0 MS	240 KB	101	2024-03-29 15:09:27

#include<iostream> using namespace std; int main() { int n; cout<<n*(n+1)/2; return 0; }