#include <iostream>
#include <cstdio>
#include <algorithm>
using namespace std;
int main() {
int n, m, v[1005], x, y;
long long int sum=0;
scanf("%d%d", &n, &m);
for(int i=0; i<n; i++) scanf("%d", &v[i]);
for(int i=0; i<m; i++) {
scanf("%d%d", &x, &y);
sum+=min(v[x-1], v[y-1]);
}
printf("%lld", sum);
return 0;
}
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