#include<stdio.h> using namespace std; int main(){ int n,sum; while(scanf("%d", &n) != EOF){ sum = 0; for(int i = 0;i <= n;++i){ if(0 == i%7){ sum = sum; } else if(7 != i%10 && 7 != i/10){ sum = sum + (i*i); } } printf("%d\n",sum); } }