#24911: C++解法


mdwiwi0130@gmail.com (naiye130)


#include <iostream>

using namespace std;

int main(){

int a;

long int f=1,g=1; //小心溢位

while(cin>>a){

for(int i=2;i<=a;++i){

f=i+f;

g=f+g;

}

cout<<f<<" "<<g<<"\n";

f=1;

g=1;

}

return 0;