#include <bits/stdc++.h>
using namespace std;
void inp(long long &n, long long &m, vector<long long> &v,
         vector<pair<signed, signed> > &rope) {
  cin >> n >> m;
  v.resize(n + 1);
  rope.resize(m + 1);
  for (long long i = 1; i <= n; ++i) {
    cin >> v[i];
  }
  for (long long i = 1; i <= m; ++i) {
    cin >> rope[i].first >> rope[i].second;
  }
}
void solve() {
  long long n, m, res = 0;
  vector<long long> v;
  vector<pair<signed, signed> > rope;
  inp(n, m, v, rope);
  for (long long i = 1; i <= m; ++i) {
    res += min(v[rope[i].first], v[rope[i].second]);
  }
  cout << res;
}
signed main() {
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  solve();
  return 0;
}
