#include <bits/stdc++.h>
#include <atcoder/all>
#include "testlib.h"
using namespace std;
using namespace atcoder;
using ld = long double;
using ll = long long;

#define Rep(parameter, start, end) for(int parameter = start; parameter < (ll)(end); parameter++)
#define rep(parameter, end) Rep(parameter, 0, end)
#define rRep(parameter, start, end) for(int parameter = (ll)(end)-1; parameter >= start; parameter--)
#define rrep(parameter, end) rRep(parameter, 0, end)

const int HW_min_size = 1;
const int HW_max_size = 100;
const int K_min_size = 1;

int main() {
    registerValidation();
    int H = inf.readInt(HW_min_size, HW_max_size);
    inf.readSpace();
    int W = inf.readInt(HW_min_size, HW_max_size);
    inf.readSpace();
    int K = inf.readInt(K_min_size,H+W);
    inf.readEoln();
    rep(i,H){
        string S = inf.readString();
        assert((int)(S.size() == W));
        for(auto c : S){
            assert(c == 'o' || c == '.' || c == '#');
        }
        if(i == 0) assert(S[0] == '.');
        if(i == H-1) assert(S[W-1] == '.');
    }
    inf.readEof();
    return 0;
}

/*



*/