#!/usr/bin/env python3

def fst_layer(a, b, c):
    return 2*(a*b + a*c + b*c)

def abc(n):
    for a in range(1, int((n//6)**0.5)+1):
        for b in range(a, int((a**2 + n//2)**0.5) - a):
            for c in range(b, (n - 2*a*b) // (2*a + 2*b)):
                yield a,b,c

n = 2*10**4
sieve = [0]*n

for a,b,c in abc(n):
    m = 0
    lyn = fst_layer(a, b, c)
    while lyn < n:
        sieve[lyn] += 1
        lyn += 4*(2*m + a + b + c)
        m += 1

print(sieve.index(1000))