This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
const long long MX=2e3+10;
int a[MX][MX],kvil[MX];
int corx[4]={0,0,1,-1};
int cory[4]={1,-1,0,0};
int n,m;
void upd(int x,int y)
{
if(a[x][y])
{
return;
}
a[x][y]=1;
kvil[x+y]--;
for(int i=0;i<4;i++)
{
int nx=x+corx[i];
int ny=y+cory[i];
if(!(nx==1 && ny==1) && !(nx==n && ny==m) && ((a[nx-1][ny]==1 && a[nx][ny-1]==1) || (a[nx+1][ny]==1 && a[nx][ny+1]==1)))
{
upd(nx,ny);
}
}
}
int main()
{
cin.tie(0);
ios_base::sync_with_stdio(0);
cin>>n>>m;
for(int i=0;i<=n+1;i++)
{
for(int j=0;j<=m+1;j++)
{
if(i!=0 && j!=0 && i!=n+1 && j!=m+1)
{
kvil[i+j]++;
}
else
{
a[i][j]=1;
}
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
int zn;
cin>>zn;
if(zn==1)
{
if(!a[i][j])
{
upd(i,j);
}
}
}
}
int q;
cin>>q;
while(q--)
{
int x,y;
cin>>x>>y;
if(a[x][y]==1)
{
cout<<"1\n";
continue;
}
if(kvil[x+y]==1)
{
cout<<"0\n";
}
else
{
upd(x,y);
cout<<"1\n";
}
}
return 0;
}
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