#1877: ~~~~~~~~~~~~~~~~~~~~~~


tommybogi (tommy)


#include<iostream>  
using namespace std;  
int main(){  
    int a, b;  
     while(cin>>a){  
     b=(1*a*a*a+5*a+6)/6;
     cout<<b<<endl;  
     }   
     return 0;  
#1878: Re:~~~~~~~~~~~~~~~~~~~~~~


qwer12343 (風中細雨)


#include  
using namespace std;  
int main(){  
    int a, b;  
     while(cin>>a){  
     b=(1*a*a*a+5*a+6)/6;
     cout<     }   
     return 0;  

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