#include<bits/stdc++.h>
#define ull unsigned long long

using namespace std;

int n, m, k;
ull p[2501];
bool g[2501][2501];

bool cmp(int a, int b)
{
	return a > b;
}

int main()
{
	//freopen
	
	int i;
	int s, e;
	
	cin >> n >> m >> k;
	for(i = 1; i <= n; i++)
	{
		cin >> p[i];
	}
	for(i = 1; i <= m; i++)
	{
		cin >> s >> e;
		g[s][e] = g[e][s] = 1;
	}
	
	sort(p, p + n, cmp);
	
	cout << p[1] + p[2] + p[3] + p[4];

	return 0;
}

** 它得了15分 **