use proconio::input;
use proconio::fastout;
use ac_library::ModInt1000000007 as Mint;

fn ncr(n: usize, r: usize) -> Mint {
    let mut ret = Mint::new(1);
    for i in n-r+1..=n {
        ret *= i;
    }
    for i in 1..=r {
        ret /= i;
    }
    return ret;
}

fn pow(x: usize, mut k: usize) -> Mint {
    let mut x = Mint::new(x);
    let mut ret = Mint::new(1);
    while k > 0 {
        if k & 1 > 0 {
            ret = ret * x;
        }
        x = x * x;
        k >>= 1;
    }
    return ret;
}

#[fastout]
#[allow(non_snake_case)]
fn main() {
    input! {
        (H, W, M): (usize, usize, usize),
    }
    if H + W - 1 > M {
        println!("0");
    }
    else {
        println!("{}", ncr(H+W-2, H-1) * ncr(M, H+W-1) * pow(M, H*W-H-W+1));
    }
}