Submission #487152

#	Time	Username	Problem	Language	Result	Execution time	Memory
487152		M_W	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	45 ms	67604 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
queue<int> q[100001];

long long count_swaps(vector<int> S){
	int len = S.size();
	for(int i = 0; i < len; i++){
		if(S[i] > 0) q[S[i]].push(i);
	}
	long long ans = 0;
	for(int i = 0; i < len; i++){
		if(S[i] < 0){
			if(q[-S[i]].front() < i) ans += (i - q[-S[i]].front()) * 1ll;
			else ans += (q[-S[i]].front() - i - 1) * 1ll;
			q[-S[i]].pop();
		}
	}
	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