Ruudukko

#include <iostream>
#include <vector>
#include <string>
#include <set>
#include <utility>
#include <algorithm>

using namespace std;
typedef long long LL;

int main(){
	int k; cin >> k;
	for(int row = 0; row < 20; row++){
		cout << ".";
		if(row % 2 == 0 && row < 2*k){
			for(int i = 0; i < 18; i++){
				cout << ".";
			}
		}
		else{
			for(int i = 0; i < 18; i++){
				cout << "#";
			}			
		}
		cout << "." << endl;
	}
	
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: WRONG ANSWER

Test 7

Group: 2

Verdict: WRONG ANSWER

Test 8

Group: 2

Verdict: WRONG ANSWER

Test 9

Group: 2

Verdict: WRONG ANSWER

Test 10

Group: 2

Verdict: WRONG ANSWER

Test 11

Group: 3

Verdict: WRONG ANSWER

Test 12

Group: 3

Verdict: WRONG ANSWER

Test 13

Group: 3

Verdict: WRONG ANSWER

Test 14

Group: 3

Verdict: WRONG ANSWER

Test 15

Group: 3

Verdict: WRONG ANSWER