#include <bits/stdc++.h>
using namespace std;

bool is_square(long N) {
    long r = (long)floor(sqrt((long double)N));  // 切り捨てした平方根
    return (r * r) == N;
}

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