#include<cstdio>
using ull = unsigned long long;

int main(){
    ull N, ok, ng, mid, answer = 0;
    scanf("%llu", &N);
    ull square = N*N;
    for (ull a = 1; a < N; a++){
        ok = N - a, ng = N;
        while(ng - ok > 1){
            mid = ok + ng >>1;
            if(a*a + mid*mid <= square) ok = mid;
            else ng = mid;
        }
        if(a*a + ok*ok == square) answer++;
    }
    printf("%llu\n", answer);
	return 0;
}