#include<bits/stdc++.h> using namespace std; int n,a[1009],b; int main() { cin>>n; for(int i = 1,x;i <= n;i++) { cin >> x; b += (a[x] == 0); a[x]++; } for(int i = 1;i <= b;i++) { int p = 0; for(int j = 1;j <= 1000;j++) if(a[j] > a[p]) p = j; if(i != b) cout << p << "->"; else cout << p; a[p]=0; } return 0; }