#define _USE_MATH_DEFINES #include using namespace std; signed main() { ios::sync_with_stdio(false); cin.tie(0); int goal[4][4], a[4][4]; int x, y; for (int i = 0; i < 4; i++) { for (int j = 0; j < 4; j++) { cin >> a[i][j]; goal[i][j] = i * 4 + j + 1; if(a[i][j] == 0) { x = i; y = j; } } } goal[3][3] = 0; int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}; while (true) { bool flag = false; for (int i = 0; i < 4; i++) { int xx = x + dx[i]; int yy = y + dy[i]; if (xx >= 0 && xx < 4 && yy >= 0 && yy < 4) { if (a[xx][yy] == x * 4 + y + 1) { swap(a[xx][yy], a[x][y]); x = xx; y = yy; flag = true; break; } } } if(!flag) break; } for (int i = 0; i < 4; i++) { for (int j = 0; j < 4; j++) { if(a[i][j] != goal[i][j]) { cout << "No" << endl; return 0; } } } cout << "Yes" << endl; return 0; }