#include <bits/stdc++.h>
using namespace std;
/*
N^2-x^2=y^2


*/

bool is_square(long x){
    double p = sqrt(x)* sqrt(x) - (double)x;
    if(p == 0.0){
        return true;
    }
    return false;
}

int main(){
    long N;
    int count = 0;
    scanf("%ld",&N);
    for(long i=1;i<N;i++){
        if(is_square(N*N-i*i)){
            count++;
        }
    }
    printf("%d",count);
}