#include<bits/stdc++.h>
using namespace std;
int main()
{
int i,j=0,n,b,s,g;
cin>>n;
for(i=1;i<=n;i++)
{
if(i%7==0||i/100==7||i/10%10==7||i%10==7) continue;
j=j+i;
}
cout<<j;
  
return 0;
} 
/**************************************************************
	Problem: 1393
	User: wengzihang
	Language: C++
	Result: Accepted
	Time:23 ms
	Memory:2072 kb
****************************************************************/