53483

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
53483	littletwleve	求1+2+3+...	C++	Accepted	0 MS	248 KB	164	2024-10-23 14:16:54

#include<bits/stdc++.h> using namespace std; int sum(int n){ if(n==1) return 1; else return n+sum(n-1); } int main(){ int x; cin>>x; cout<<sum(x); }