#include <fstream>

using namespace std;

ifstream cin("subsir.in");
ofstream cout("subsir.out");

int v1[501];
int v2[501];
int d[501][501][2];

int main()
{
    char ch='a';
    int ok=0,n=0,m=0,i,j;
    while(cin.get(ch))
    {
        if(ch=='\n')
            ok++;
        else
        {
            if(ok==0)
            {
                n++;
                v1[n]=ch-'a'+1;
            }
            else
            {
                m++;
                v2[m]=ch-'a'+1;
            }
        }
    }

    for(i=1;i<=n;i++)
        for(j=1;j<=m;j++)
        {
            ok=0;
            if(v1[i]==v2[j])
                ok++;
            d[i][j][0]=max(d[i-1][j][0],max(d[i][j-1][0],d[i-1][j-1][0]+ok));
            if(d[i-1][j][0]==d[i][j][0])
                d[i][j][1]+=d[i-1][j][1];
            if(d[i][j-1][0]==d[i][j][0])
                d[i][j][1]+=d[i][j-1][1];
            if(d[i-1][j-1][0]+ok==d[i][j][0])
                d[i][j][1]+=d[i-1][j-1][1];
            if(d[i][j][1]==0 and d[i][j][0]!=0)
                d[i][j][1]=1;
        }
    cout<<d[n][m][1];
    return 0;
}