#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

ll m = 1e9 + 7;

ll mul(ll a, ll b = 1, ll c = 1, ll d = 1)
{
    ll kj = a * b;
    kj %= m;
    kj *= c;
    kj %= m;
    kj *= d;
    kj %= m;
    return kj;
}

ll mpow(ll x, ll n)
{
    ll ret = 1;
    while (n) {
        if (n % 2) {
            ret *= x;
            ret %= m;
        }
        x = (x * x) % m;
        n /= 2;
    }
    return ret;
}

int main()
{
    int K;
    ll N;
    cin >> K >> N;
    if (N == 1) {
        cout << (K == 0 ? 1 : 0) << endl;
        return 0;
    }
    if (N == 2) {
        cout << 2 << endl;
        return 0;
    }
    ll dp[100100][7];
    dp[0][0] = N;
    for (int i = 1; i <= 3; i++) {
        dp[0][i] = N - 1;
    }
    for (int i = 4; i < 6; i++) {
        dp[0][i] = N - 2;
    }
    dp[0][6] = N - 3;
    for (int i = 1; i <= K; i++) {
        dp[i][0] = mul(N, mpow(dp[i - 1][1], 3));
        dp[i][1] = mul(N - 1, mpow(dp[i - 1][4], 2), dp[i - 1][1]);
        dp[i][1] += mul(mpow(dp[i - 1][2], 2), dp[i - 1][1]);
        if (dp[i][1] >= m) {
            dp[i][1] -= m;
        }
        dp[i][2] = mul(N - 1, dp[i - 1][5], mpow(dp[i - 1][4], 2));
        dp[i][2] += mul(dp[i - 1][3], mpow(dp[i - 1][2], 2));
        if (dp[i][2] >= m) {
            dp[i][2] -= m;
        }
        dp[i][3] = mul(N - 1, mpow(dp[i - 1][5], 3));
        dp[i][3] += mpow(dp[i - 1][3], 3);
        if (dp[i][3] >= m) {
            dp[i][3] -= m;
        }
        dp[i][4] = mul(N - 2, dp[i - 1][6], mpow(dp[i - 1][4], 2));
        dp[i][4] += mul(2, dp[i - 1][5], dp[i - 1][4], dp[i - 1][2]);
        if (dp[i][4] >= m) {
            dp[i][4] -= m;
        }
        dp[i][5] = mul(N - 2, dp[i - 1][5], mpow(dp[i - 1][6], 2));
        dp[i][5] += mpow(dp[i - 1][5], 3);
        dp[i][5] += mul(mpow(dp[i - 1][5], 2), dp[i - 1][3]);
        dp[i][5] %= m;
        dp[i][6] = mul(N - 3, mpow(dp[i - 1][6], 3));
        dp[i][6] += mul(3, dp[i - 1][6], mpow(dp[i - 1][5], 2));
    }
    cout << dp[K][0] << endl;
}