#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m;
  cin >> n >> m;
  int a[n + 1];
  for (int i = 1; i <= n; ++i) {
    cin >> a[i];
  }
  int sum = 0;
  for (int i = 0; i < m; ++i) {
    int x, y;
    cin >> x >> y;
    sum = min(a[x], a[y]) + sum;
  }
  cout << sum;
}
