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

int main() {
	const int n = 10;

	int A[n] = { 3, 43, 54, 64, 0, 43, 60, 20, 100, 304};
	int B[n] = { 7, 2, 154, 11, 33, 70, 142, 500, 54, 4};
	int C[2*n];

	for(int i = 0; i < n; i++) {
		C[i*2] = A[i];
		C[i*2+1] = B[i];
	}

	for(int i = 0; i < 2 * n; i++){
		cout<<C[i]<<" ";
	}

	cout<<endl;


	return 0;
}