#include <bits/stdc++.h>
using namespace std;
int main(){
    int n,m;
    cin >> n;
    cin >> m;
    cout << "n " << n << " m " << m << endl;
    int numInkBottol = m;
    int numWanabePainted =n;
    //順番にインクのバケツにいれる。
    long patterns = 1;
    long mod = (long)pow(10,9)+7;
    int modInkBottle = m % mod;
    for (int i = modInkBottle; i > 0; i--){
        if (numWanabePainted > 0){
            patterns = patterns * i;
            patterns = patterns % mod;
            //cout << i << " " << patterns << endl;
        }else{
            break;
        }
        numWanabePainted--;
    }
    cout << patterns << endl;
}