#include <iostream>
#include <vector>
using namespace std;

int main() {
    int n, m;
    cin >> n >> m;
    
    vector<vector<int>> matrix(n, vector<int>(m));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> matrix[i][j];
        }
    }
    
    int age1, age2;
    cin >> age1 >> age2;
    
    pair<int, int> pos1(-1, -1), pos2(-1, -1);
    
    // 查找两个年龄的位置
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (matrix[i][j] == age1) {
                pos1 = {i, j};
            } else if (matrix[i][j] == age2) {
                pos2 = {i, j};
            }
        }
    }
    
    // 检查是否相邻
    if (abs(pos1.first - pos2.first) + abs(pos1.second - pos2.second) == 1) {
        cout << "Y" << endl;
    } else {
        cout << "N" << endl;
    }
    
    return 0;
}
/**************************************************************
	Problem: 2000
	User: fuyijun
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/