78534

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
78534	sh25_zhangyy	求1+2+3+...	C++	Accepted	0 MS	236 KB	102	2025-12-26 17:50:34

#include<bits/stdc++.h> using namespace std; int main() {cout<<"15"<<endl; return 0; }