Submission #422619

#	Time	Username	Problem	Language	Result	Execution time	Memory
422619		TryMax	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1079 ms	3108 KiB

shoes

#include "shoes.h"
#include "bits/stdc++.h"

using namespace std;

long long count_swaps(vector<int> s) {
	int n = s.size();
	int ans = 0;
	for(int i = 0; i < n; i += 2){
        if(s[i] < 0){
            int p = 0;
            for(int j = i + 1; j < n; ++j)
                if(s[j] == -1 * s[i]){
                    p = j;
                    break;
                }
            while(p > i + 1)
                swap(s[p - 1], s[p]), --p, ++ans;
        }else{
            int p = 0;
            for(int j = i + 1; j < n; ++j)
                if(s[j] == -1 * s[i]){
                    p = j;
                    break;
                }
            while(p > i)
                swap(s[p - 1], s[p]), --p, ++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