46005

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
46005	Jerry	求和	C++	Accepted	1 MS	284 KB	165	2024-04-21 20:42:02

#include<iostream> using namespace std; int main(){ int a[10000]={ },n; cin>>n; a[1]=1; for (int i=2;i<=n+1;i++){ a[i]=a[i-1]+i; } cout<<a[n+1]; }