20766

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
20766	LeoWang	[在线测评解答教程] 求和	C++	Accepted	1 MS	248 KB	126	2023-06-20 08:07:30

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