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)