#include <stdio.h>
#include <stdlib.h>
int n,m;
char a[100][100];

int going_in(x,y)
{
    if ((x==n-1) && (y==m-1))
    {
        return 1;
    }
    else if (x==n-1)
    {
        if (a[x][y+1]=='&')
        {
            return 1;
        }
        else
        {
            return 1+going_in(x,y+1);
        }
    }
    else if (y==m-1)
    {
        if (a[x+1][y]=='&')
        {
            return 1;
        }
        else
        {
            return 1+going_in(x+1,y);
        }
    }
    else
    {
        if ((a[x+1][y]=='&') && (a[x][y+1]=='&'))
        {
            return 1;
        }
        else if (a[x+1][y]=='&')
        {
            return 1+going_in(x,y+1);
        }
        else if (a[x][y+1]=='&')
        {
            return 1+going_in(x+1,y);
        }
        else
        {
            int nr1=going_in(x+1,y);
            int nr2=going_in(x,y+1);
            if (nr1>nr2)
            {
                return 1+nr1;
            }
            else
            {
                return 1+nr2;
            }
        }
    }
}

int main()
{
    scanf("%d %d",&n,&m);
    int i,j;
    for (i=0;i<n;i++)
    {
        scanf("%s",a[i]);
    }
    printf("%d",going_in(0,0));
    return 0;
}