#include <bits/stdc++.h>
using namespace std;
 
bool isSafe(int i,int j,vector<vector<int>>& grid){
    return i>=0 && j>=0 && i<grid.size() && j<grid[i].size() && grid[i][j]==1;
}
 
void solve(vector<vector<int>> &grid, queue<pair<int,int>> &q,int m, int n, int tm){
    int dx[4]={-1,1,0,0};
    int dy[4]={0,0,1,-1};
    for(int i=0;i<tm;i++){
        int k = q.size();
        for(int ii=0;ii<k;ii++){
            int x = q.front().first;
            int y = q.front().second;
            q.push({x,y});
            q.pop();
            for(int iii=0;iii<4;iii++){
                if(isSafe(x+dx[iii],y+dy[iii],grid)){
                    grid[x+dx[iii]][y+dy[iii]] = 2;
                    q.push({x+dx[iii], y+dy[iii]});
                }
            }
        }
    }
}
 
int main() {
    int m,n,t;
    cin >> m >> n >> t;
    vector<vector<int>> v(m,vector<int>(n,0));
    queue<pair<int,int>> q;
    for(int i=0;i<m;i++){
        for(int j=0;j<n;j++){
            int x;
            cin >> x;
            v[i][j] = x;
            if(x==2) q.push({i,j});
        }
    }
    solve(v,q,m,n,t);
    int res = 0;
    for(int i=0;i<m;i++){
        for(int j=0;j<n;j++){
            if(v[i][j]==1)res++;
        }
    }
    cout << res;
}

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3 3 2
1 1 1
0 1 1
0 1 2