n,m = map(int,input().split())
a = list(map(int,input().split()))
store = set()
b = list(range(1,n+1))
d = {}
for i in b:
d[i] = []
for _ in range(m):
x,y = map(int,input().split())
store.add((x,y))
store.add((y,x))
d[x].append(y)
d[y].append(x)
count = 0
z = sorted(zip(a,b))
for _,i in z:
for j in d[i]:
if (i,j) not in store:
continue
count+= a[i-1]
store.remove((i,j))
store.remove((j,i))
if len(store)==0:
break
print(count)// author: Ali Safwat
#include <bits/extc++.h>
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define Caraxes ios_base :: sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define int long long int
#define F first
#define S second
using namespace std;
// using namespace __gnu_pbds;
template< typename T = int >
std :: vector < T > get(int size = 0, std :: istream& in_stream = std :: cin);
const int N = 1e6+ 20;
void Dracarys(){
int n,m;
cin >> n >> m;
map < int, int > mp;
for(int i = 1;i <= n; ++i){
int val;
cin >> val;
mp[i] = val;
}
int ans = 0;
for(int i = 0;i < m; ++i){
int u,v;
cin >> u >> v;
ans += (min(mp[u],mp[v]));
}
cout << ans << '\n';
}
signed main()
{
Caraxes
int test = 1;
//cin >> test;
while(test--) {
Dracarys();
}
}
template< typename T>
std :: vector < T > get(int size , std :: istream& in_stream){
if(!size){
in_stream >> size;
}
std :: vector < T > array(size);
for(auto& i : array)
in_stream >> i;
return array;
}1574A - Regular Bracket Sequences | 1574B - Combinatorics Homework |
1567A - Domino Disaster | 1593A - Elections |
1607A - Linear Keyboard | EQUALCOIN Equal Coins |
XOREQN Xor Equation | MAKEPAL Weird Palindrome Making |
HILLSEQ Hill Sequence | MAXBRIDGE Maximise the bridges |
WLDRPL Wildcard Replacement | 1221. Split a String in Balanced Strings |
1002. Find Common Characters | 1602A - Two Subsequences |
1555A - PizzaForces | 1607B - Odd Grasshopper |
1084A - The Fair Nut and Elevator | 1440B - Sum of Medians |
1032A - Kitchen Utensils | 1501B - Napoleon Cake |
1584B - Coloring Rectangles | 1562B - Scenes From a Memory |
1521A - Nastia and Nearly Good Numbers | 208. Implement Trie |
1605B - Reverse Sort | 1607C - Minimum Extraction |
1604B - XOR Specia-LIS-t | 1606B - Update Files |
1598B - Groups | 1602B - Divine Array |