cladire

#include <bits/stdc++.h>

using namespace std;
short n,m,d[1001][1001];
int main()
{
    ifstream f("cladire.in");
    ofstream g("cladire.out");
    f>>n>>m;
    for(int i=1;i<=n;i++){
        d[i][1]=1;
    }
    for(int j=1;j<=m;j++){
        d[1][j]=1;
    }
    for(int i=2;i<=n;i++){
        for(int j=2;j<=m;j++){
            d[i][j]=(d[i-1][j]+d[i][j-1])%9901;
            ///cout<<d[i][j]<<" ";
        }
        ///cout<<endl;
    }
    g<<d[n][m];
    return 0;
}