x, y, mod = map(int,input().split())
ax = (x//2) * (x//2 - 1) // 2 * 2 % mod
if x % 2 == 1: ax = (ax + x//2) % mod
ax = ax * y * 2 % mod
ay = (y//2) * (y//2 - 1) // 2 * 2 % mod
if y % 2 == 1: ay = (ay + y//2) % mod
ay = ay * x * 2 % mod
print((ax+ay) % mod)