#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long count_swaps(vector<int> a) {
int n = a.size();
long long res = 0;
for (int i = 0; i < n; i++) {
if (a[i] < 0) {
continue;
}
if (i > 0 && a[i] == -a[i - 1]) {
continue;
}
for (int j = i + 1; j < n; j++) {
if (a[j] == -a[i]) {
for (int k = j; k > i; k--) {
res++;
swap(a[k], a[k - 1]);
}
break;
}
}
}
return res;
}
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