This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
typedef long long ll;
typedef pair <int, int> pii;
const int N = 1e3 + 3;
int n, m;
string s[N];
pii nxt (pii p) {
	if (p.first == 0) {
		if (p.second == 2)
			return pii(1, 2);
		return pii(p.first, p.second + 1);
	}
	if (p.second == 0)
		return pii(0, 0);
	return pii(p.first, p.second - 1);
}
char get (pii p) {
	return s[p.first][p.second];
}
void upd (pii p) {
	s[p.first][p.second] = '1';
}
int main() {
	ios::sync_with_stdio(false), cin.tie(0);
	cin >> n;
	if (n == 1) {
		cin >> s[0] >> s[1];
		int num = 0;
		for (int i = 0; i < 2; i++)
			for (int j = 0; j < 3; j++)
				num += s[i][j] == '0';
		if (num % 3) {
			cout << "nemoguce\n";
			return 0;
		}
		if (num  == 0) {
			cout << s[0] << "\n" << s[1] << "\n";
			return 0;
		}
		if (num == 6) {
			cout << "111\n222\n";
			return 0;
		}
		for (int i = 0; i < 2; i++)
			for (int j = 0; j < 3; j++) {
				if (s[i][j] == '0' && get(nxt(pii(i, j))) == '0' && get(nxt(nxt(pii(i, j)))) == '0') {
					s[i][j] = '1';
					upd(nxt(pii(i, j)));
					upd(nxt(nxt(pii(i, j))));
					cout << s[0] << "\n" << s[1] << "\n";
					return 0;
				}
			}
		cout << "nemoguce\n";
		return 0;
	}
	return 0;
}
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