#include<stdio.h>
#include<math.h>
int main(void) {
	int count = 0, num, numSquare,iSquare;
	int numa;
	long double numb;
	scanf("%d", &num);
	numSquare = num * num;
	for (int i = 1; i <= num; i++) {
		numa = numb = sqrt(numSquare - (i * i));
		if (numa*numa == (numSquare - (i*i))) {
			count++;
			if (numa != i) {
				count++;
			}
		}
	}
	printf("%d", count);
	return 0;
}