Submission #1040620

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040620		LaMatematica14	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1097 ms	3164 KiB

shoes

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

long long count_swaps(vector<int> S) {
    int n = S.size();
    long long tot = 0;
    for (int i = 0; i < n; i+=2) {
        for (int j = i+1; i < n; j++) {
            if (S[j] != -S[i]) continue;
            for (int k = j-1; k > i; k--) {
                swap(S[k], S[k+1]); tot++;
            }
            if (S[i] > 0) tot++;
            break;
        }
    }
    return tot;
}

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