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#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
//n = 1 its either 1 or 0
//n = 8 we can brutazo
//all shoes are same, we just need to get all inversion (even is left, odd is right)
//all shoes need to travel n?
//eta ~ 25 minutes
/*full solutions*/
//O(N^2)
/*
dp[n][i]
//min swaps at position i after considering n pairs?
*/
/*SUBTASK 1-2*/
long long count_swaps(vector<int> s) {
ll ans = 0;
int n = s.size();
int first = 0;
for(int i =0; i<n; i++){
if(s[i] < 0){
ans += abs(s[i] - first);
first +=2;
}
}
return ans;
}
/***********/
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