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

bool comp1( double a, double b ) {
	cout <<a<<"--"<<b<<";"<< endl;
	return a < b;
    }

int main() {
    int n;
    cin>>n;
    double *x= new double[n];
    for ( int i=0; i<n; i++ ) {
    	cin>>x[i];
    }
    cout << "graph G{" << endl;
    sort(x, x + n, comp1);
    cout << "}" <<endl;
    
    
    cout<<endl;
}