1
查看原帖
1
1505381
daydaydown楼主2025/1/11 20:37
#include "bits/stdc++.h"
using namespace std;


int main(){
	int n;
	cin>>n;
	int a1=0,a2=0;
	for(int i=1;i<=n;i++){
	a1+=i;
	a2+=i*i;	
	}
	cout<<a1*n*2<<"\n"<<a2;
}
2025/1/11 20:37
加载中...