simetric

#include <cstdio>
int n,m,i,j,lg,ok,nr;
int v[403][403];
int x[403][403];

int main()
{
    freopen("simetric.in","r",stdin);
    freopen("simetric.out","w",stdout);
    scanf("%d%d",&n,&m);
    for(i=1;i<=n;++i)
        for(j=1;j<=m;++j)
        {
            scanf("%d",&v[i][j]);
            x[i][j]=1;
        }
    printf("%d\n",n*m);
    ok=1,lg=1;

    while(ok)
    {
        ++lg;
        nr=0;
        for(i=1;i<=n-lg+1;++i)
            for(j=1;j<=m-lg+1;++j)
            {
                if(x[i][j] && x[i+1][j+1] && (v[i][j+lg-1]==v[i+lg-1][j]))
                    ++nr;
                else
                    x[i][j]=0;
            }
        if(!nr)
            ok=0;
        else
            printf("%d\n",nr);
    }
    return 0;
}