#include <bits/stdc++.h>
#define ll long long
#define Code_By_Mohamed_Khaled ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(0);
using namespace std;
ll n,m,k,cnt=0;char grid[11][11][11];ll vis[11][11][11]={0};
ll dx[]={1,-1,0,0,0,0};
ll dy[]={0,0,1,-1,0,0};
ll dz[]={0,0,0,0,1,-1};
bool valid(ll z,ll i,ll j)
{
return z>=0 and i>=0 and j>=0 and z<k and i<n and j<m and grid[z][i][j]=='.' and vis[z][i][j]==0;
}
void dfs(ll z,ll i,ll j)
{
vis[z][i][j]=1;cnt++;
for(ll k=0;k<6;k++)
{
ll zz=z+dz[k],ii=i+dx[k],jj=j+dy[k];
if(valid(zz,ii,jj))dfs(zz,ii,jj);
}
}
int main()
{
cin>>n>>m>>k;
for(ll z=0;z<k;z++)
{
for(ll i=0;i<n;i++)
{
for(ll j=0;j<m;j++)
{
cin>>grid[z][i][j];
}
}
}
ll x,y;cin>>x>>y;
x--;y--;
dfs(0,x,y);
cout<<cnt;
return 0;
}
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