#include <vector>
#include <iostream>
#include <assert.h>

using namespace std;

int N, C;

int main() {
    cin >> N >> C;

    for (int i = 0; i < N; i++) {
        int p;
        long long t;
        cin >> p >> t;
        // TODO: use p and t
    }

    // TODO: write the solution

    long long sol = 42;
    cout << sol << endl;
}