#include <bits/stdc++.h>
#define pii pair<int, int>
#define fi first
#define se second
#define mp make_pair
using namespace std;
const int N = 2e5 + 7;
int n, c[N];
long long p[7];
pii a[N];
int main(){
	scanf("%d", &n);
	for(int i = 1; i <= n; i++) scanf("%d", &a[i].fi), a[i].se = i;
	sort(a + 1, a + n + 1);
	for(int i = 1; i <= n; i++){
		if(p[1] <= p[2] && p[1] <= p[3]) p[1] += a[i].fi, c[a[i].se] = 1;
		else if(p[2] <= p[1] && p[2] <= p[3]) p[2] += a[i].fi, c[a[i].se] = 2;
		else p[3] += a[i].fi, c[a[i].se] = 3;
	}
	long long s = p[1] + p[2] + p[3];
	if(max({p[1], p[2], p[3]}) * 2 > s) printf("Internationale!\n");
	else{
		for(int i = 1; i <= n; i++) printf(c[i] == 1 ? "Z" : (c[i] == 2 ? "Y" : "B"));
		printf("\n");
	}
	return 0;
}