51242

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
51242	张思存	[在线测评解答教程] 求和	C++	Compile Error	0 MS	0 KB	167	2024-09-20 15:37:40

#include<bits/stdc++.h> using namespace std; int main() { int a; for (int i = m;i>=n;i-=2){ cin >> a; cout << n*(n+1)/2; } return 0;}