Submission #1291697

#	Time	Username	Problem	Language	Result	Execution time	Memory
1291697		goulthen	Arranging Shoes (IOI19_shoes)	C++20	10 / 100	1096 ms	1964 KiB

shoes

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

using namespace std;

#define ll long long
#define rep(i,a,b) for(int i = a; i <= b; i++)

const int MAXN = 2e5+10;
int a[MAXN];

ll count_swaps(vector<int> s) {
	ll ans = 0;
	while (s.size() > 0) {
		rep(i,1,s.size()-1) {
			if(abs(s[i])==abs(s[0])) {
				ans += i;
				if(s[0] <0) ans--;
				s.erase(s.begin()+i);
				s.erase(s.begin());
				break;
			}
		}
	}
	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