#include <bits/stdc++.h>
using namespace std;
int main(){
    int i,o,p,sum=0;
    cin>>i;
    i*=10;
    for(int y=8;y<i;y+=8){
        for(int t=2;t<i-y;t+=2){
            if(y+t>=i||y/8+t/2+i-y-t<=30)continue;
            sum++;
        }
    }
    cout<<sum;
}
/**************************************************************
	Problem: 1024
	User: wangyiyang
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/