Submission #532206

#	Time	Username	Problem	Language	Result	Execution time	Memory
532206		ohohorz	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1089 ms	1864 KiB

shoes

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

long long count_swaps(std::vector<int> s) {
	ll n = s.size()/2;
	ll ans = 0;
	for(int i = 0;i < (2 * n);i+=2){
		int idx = -1;
		for(int j = i;j < (2*n);j++){
			if(s[j] < 0){
				idx = j;
				break;
			}
		}

		while(idx > i){
			swap(s[idx], s[idx - 1]);
			idx --;
			ans ++;
		}
		idx = -1;
		for(int j = i;j < (2*n);j++){
			if(s[j] > 0 and abs(s[j]) == abs(s[i])){
				idx = j;
				break;
			}
		}
		while(idx > i+1){
			swap(s[idx], s[idx - 1]);
			idx --;
			ans ++;
		}

	}

	return ans;
}

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