#include<stdio.h>

 char xx[][];

 int dps(int i,int j)

 {

     if(xx[i-][j-]=='@')

     {

         xx[i-][j-]='#';

         dps(i-,j-);

     }

     if(xx[i-][j]=='@')

     {

         xx[i-][j]='#';

         dps(i-,j);

     }

     if(xx[i-][j+]=='@')

     {

         xx[i-][j+]='#';

         dps(i-,j+);

     }

     if(xx[i][j-]=='@')

     {

         xx[i][j-]='#';

         dps(i,j-);

     }

     if(xx[i][j+]=='@')

     {

         xx[i][j+]='#';

         dps(i,j+);

     }

     if(xx[i+][j-]=='@')

     {

         xx[i+][j-]='#';

         dps(i+,j-);

     }

     if(xx[i+][j]=='@')

     {

         xx[i+][j]='#';

         dps(i+,j);

     }

     if(xx[i+][j+]=='@')

     {

         xx[i+][j+]='#';

         dps(i+,j+);

     }

 }

 int main()

 {

     int m,n,i,j,ans;

     while()

     {

         scanf("%d%d",&m,&n);

         if(m==) break;

         for(i=;i<=;i++)

             for(j=;j<=;j++)

                 xx[i][j]='*';

         for(i=;i<=m;i++)

            scanf("%s",xx[i]);

             ans=;

         for(i=;i<=m;i++)

             for(j=;j<=n;j++)

             {

                 if(xx[i][j]=='@')

                 {

                     xx[i][j]='#';

                     ans++;

                     dps(i,j);

                 }

                     /*else if(xx[i-1][j-1]!='#'&&xx[i-1][j]!='#'&&xx[i-1][j+1]!='#'&&xx[i][j-1]!='#'&&xx[i][j+1]!='#'&&xx[i+1][j-1]!='#'&&xx[i+1][j]!='#'&&xx[i+1][j+1]!='#')

                     {

                         ans++;

                         if(xx[i-1][j-1]=='@') xx[i-1][j-1]='#';

                         if(xx[i-1][j]=='@') xx[i-1][j]='#';

                         if(xx[i-1][j+1]=='@') xx[i-1][j+1]='#';

                         if(xx[i][j-1]=='@') xx[i][j-1]='#';

                         if(xx[i][j+1]=='@') xx[i][j+1]='#';

                         if(xx[i+1][j-1]=='@') xx[i+1][j-1]='#';

                         if(xx[i+1][j]=='@') xx[i+1][j]='#';

                         if(xx[i+1][j+1]=='@') xx[i+1][j+1]='#';

                     }

                 }*/

             }

             printf("%d\n",ans);

            /* for(i=1;i<=m;i++)

             {

                 for(j=0;j<=n;j++)

                 printf("%c",xx[i][j]);

                 printf("\n");

             }*/

     }

     return ;

 }