#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int main(int argc, char *argv[]) {
    int level=0,index=1;
    int sum=0;
    for(int level=1;level<=100;level++)
    {
        sum+=index;
        index+=level+1; 
		cout<<level<<"="<<sum<<endl;    
    }
    cout<<sum<<endl;
    return 0;
}