#include <iostream>
using namespace std;
int main() {
    int n, x;
    cin >> n;
    cout << n << endl;
    cout.flush();
    cin >> x;
    return 0;
}

#include <stdio.h>
int main() {
    int n, x;
    scanf("%d", &n);
    printf("%d\n", n);
    fflush(stdout);
    scanf("%d", &x);
    return 0;
}

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        System.out.println(n);
        System.out.flush();
        int x = in.nextInt();
    }
}

import sys
n = int(sys.stdin.readline())
print(n, flush=True)
x = int(sys.stdin.readline())