#include <stdio.h>
using namespace std;

int n, i, val, val2, min, l, val3, val4;

int main(){
	freopen("bac.txt", "r", stdin);
	scanf("%d", &n);
	scanf("%d", &val); min = -1;
	l = n / 2 -1;
	for(i = 2; i < l; i++){
		scanf("%d", &val2);
		if(val < val2){
			min = val;
			val = val2;
		}
	}
	scanf("%d%d", &val3, &val4);
	if(val3 < val4){
		min = val3;
	}else if(val2 < val3){
		min = val2;
	}
	if(min != -1){
		printf("%d", min);
	}else{
		printf("Nu exista");
	}
}