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

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

// constraints
#define MAXN 200005

// input data
int N, i;
int X[MAXN], Y[MAXN];

int main() {
//  uncomment the following lines if you want to read/write from files
//  freopen("input.txt", "r", stdin);
//  freopen("output.txt", "w", stdout);

    assert(1 == scanf("%d", &N));
    for(i = 0; i < N; i++) {
        assert(2 == scanf("%d%d", &X[i], &Y[i]));
    }

    // insert your code here
    
    printf("%d\n", 42); // print the result
    
    return 0;
}