#include <stdio.h>

using namespace std;

FILE*f=fopen("joc11.in","r");
FILE*g=fopen("joc11.out","w");

char v[51][51],a[51][51];

void fil(int x,int y)
{
    if (a[x-1][y]==a[x][y]&&v[x-1][y]!=1) fil(x-1,y);
    if (a[x][y-1]==a[x][y]&&v[x][y-1]!=1) fil(x,y-1);
    if (a[x+1][y]==a[x][y]&&v[x+1][y]!=1) fil(x+1,y);
    if (a[x][y+1]==a[x][y]&&v[x][y+1]!=1) fil(x,y+1);
}

int main()
{
    int n,m,i,j;
    fscanf(f,"%d%d",&n,&m);
    for (i=1;i<=n;i++)
    {
        fscanf(f,"%s\n",a[i]+1);
    }
    for (i=1;i<=n;i++)
        for ()
    return 0;
}