#include<bits/stdc++.h>
#include"testlib.h"

const int HWmin = 1, HWmax = 100;
const int Kmin = 1;

int main(){
    registerValidation();
    int H = inf.readInt(HWmin,HWmax);
    inf.readSpace();
    int W = inf.readInt(HWmin,HWmax);
    inf.readSpace();
    int K = inf.readInt(Kmin,H+W);
    inf.readEoln();
    for (int i = 0; i < H; i++){
        std::string Si = inf.readString();
        assert((int)(Si.size()) == W);
        for (int j = 0; j < W; j++){
            assert(Si[j] == '.' || Si[j] == 'o' || Si[j] == '#');
        }
        if (i == 0){
            assert(Si[0] == '.');
        }
        if (i == H-1){
            assert(Si[W-1] == '.');
        }
    }
    inf.readEof();
    return 0;
}