Submission #921410

#	Time	Username	Problem	Language	Result	Execution time	Memory
921410		AverageAmogusEnjoyer	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1069 ms	3260 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template<class T> bool cmin(T &i, T j) { return i > j ? i=j,true:false; }
template<class T> bool cmax(T &i, T j) { return i < j ? i=j,true:false; }
const int nax = 100100;
ll count_swaps(vector<int> a) {
    ll ans = 0;
    int n = (int)a.size();
    for (int i=0;i<n;i+=2) {
        for (int j=i;j<n;j++) {
            if (a[j] == -a[i]) {
                for (int k=j-1;k>i;k--) {
                    swap(a[k],a[k+1]);
                    ans++;
                }
                break;
            }
        }
        if (a[i] > 0) {
            swap(a[i],a[i+1]);
            ans++;
        }
    }
    return ans;
}

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