import sys
input = lambda : sys.stdin.readline().rstrip()

sys.setrecursionlimit(2*10**5+10)
write = lambda x: sys.stdout.write(x+"\n")
debug = lambda x: sys.stderr.write(x+"\n")
writef = lambda x: print("{:.12f}".format(x))

ans = 0
n = int(input())
for x in range(1,2*n+10):
    y = n*n - x*x
    if y>0 and abs(y**0.5 - round(y**0.5))<1e-7:
        ans += 1
print(ans)