import numpy as np
import itertools

H, W, K = map(int, input().split())

st = set()
for t in itertools.product(range(K), repeat=H * W):
    if len(set(t)) != K:
        continue
    grid = np.array(t).reshape((H, W))
    g4 = np.tile(grid, (2, 2))
    for h, w in itertools.product(range(H), range(W)):
        if tuple(g4[h:h + H, w:w + W].flatten()) in st:
            break
    else:
        st.add(tuple(grid.flatten()))
print(len(st))