Submission #465359

#	Time	Username	Problem	Language	Result	Execution time	Memory
465359		aris12345678	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	204 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

const int mxN = 100005;

ll count_swaps(vector<int> s) {
    int n = int(s.size());
    if(n == 2) {
        if(s[0] > 0)
            return 1;
        return 0;
    } else {
        vector<int> neg, pos;
        for(int i = 0; i < n; i++) {
            if(s[i] < 0)
                neg.push_back(i);
            else
                pos.push_back(i);
        }
        ll ans = 0;
        for(int i = 0; i < n/2; i++)
            ans += abs(neg[i]-pos[i]-1);
        return ans;
    }
    assert(true);
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 15