#include <iostream>
#include <fstream>

using namespace std;

int N;
int arb[30001*4];
int v[30001];

int main(int argc, char *argv[]) {
	FILE *fi = fopen("schi.in", "r");
	fscanf(fi, "%d", &N);
	for (int i(0); i < N; ++i)
		fscanf(fi, "%d", &v[i]);
	fclose(fi);

	return 0;
}