#include <stdio.h>
#include <iostream>
#include <string>

using namespace std;

#define range(i,a,b) for(int i=(a); i < (b); i++)
#define rep(i,n) range(i,0,n)

string S[3000];
int HD[3002][3002],VD[3002][3002];
int main(){
	int H,W,ans = 0;
	scanf("%d %d",&H,&W);
	if ((H < 1)||(H > 3000)){
		fprintf(stderr,"H is bad!\n");
		return -1;
	}
	if ((W < 1)||(W > 3000)){
		fprintf(stderr,"W is bad!\n");
		return -1;
	}
	rep(i,H){
		cin >> S[i];
		if (S[i].size() != W){
			fprintf(stderr,"%dth size:%d!=W:%d.\n",i,S[i].size(),W);
		}
		rep(j,W){
			if ((S[i][j] != '#') && (S[i][j] != '.')){
				fprintf(stderr,"(%d,%d):%c is wrong.\n",i,j,S[i][j]);
			}
		}
	}
	return 0;
}