jrobot c++

#include <bits/stdc++.h>
using namespace std;
int n,m,a[1005][1005],d[10000],x,y,maxx=-100000;
void nhap()
{
    scanf("%d%d\n",&n,&m);
    for (int i=1;i<=n;i++)
    {
        for (int j=1;j<=m;j++)
        {
            scanf("%d",&a[i][j]);
            if (a[i][j]>maxx) maxx=a[i][j];
            d[a[i][j]]++;
        }
        scanf("\n");
    }
    scanf("%d%d",&x,&y);
}

void xuli()
{
    int k=0;
    for (int i=a[x][y]+1;i<=maxx;i++)
    {
        if (b[i]>0) k++;
    }
    cout<<k;
}

int main()
{
    freopen("jrobot.inp","r",stdin);
    freopen("jrobot.out","w",stdout);
    nhap();
    xuli();
}