Submission #822738

#	Time	Username	Problem	Language	Result	Execution time	Memory
822738		vjudge1	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1093 ms	3128 KiB

shoes

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

using namespace std;

long long count_swaps(vector<int> s) {
	int n = (int)s.size();
	int ans = 0;
	for(int st = 0; st < n; st += 2) {
		int pos = st + 1;
		while(s[pos] != -s[st]) pos++;
		for(int i = pos; i > st + 1; i--) 
			swap(s[i], s[i - 1]),
			ans++;
		if(s[st] > 0) swap(s[st], s[st + 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