// NOTE: it is recommended to use this even if you don't understand the following code.

#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

int main() {
//  uncomment the following lines if you want to read/write from files
//  ifstream cin("input.txt");
//  ofstream cout("output.txt");

    ios::sync_with_stdio(false);

    int N, M;
    cin >> N >> M;

    vector<int> C(N);
    for (int i = 0; i < N; i++) {
        cin >> C[i];
    }

    vector<int> A(M), B(M);
    for (int i = 0; i < M; i++) {
        cin >> A[i] >> B[i];
    }

    
    // insert your code here

    cout << 42 << endl; // print the result
    return 0;
}