70!995^995
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70!995^995
1601995
qhy121楼主2025/6/26 21:04
#include<iostream>
using namespace std;
int main(){
	int n,sum=0,sum2=1;
	cin>>n;
	for(long long i=1;i<=n;i++){
		sum+=i;
	}sum=(n+sum)*2;
	cout<<sum<<"\n";
	for(long long i=2;i<=n;i++){
		sum2+=i*i;
	}cout<<sum2;
	return 0;
}
2025/6/26 21:04
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