제출 #283561

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
283561		test2	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1087 ms	7676 KiB

shoes

#include<bits/stdc++.h>
#include "shoes.h"
#include<ext/rope>
#define I inline void 
 
using namespace __gnu_cxx ; 
 
using namespace std ; 
 
using ll = long long ; 
using ld = long double ; 
 
const int N = 3000 + 7 , mod = 1e9 + 7 ;
 
// How interesting!
 
int n; 
 
 
long long count_swaps(std::vector<int> s) {
 
	int n = (int) s.size() ;
	ll ret = 0 ; 
	rope<int> shoes (n * 2 , 0) ; 
	for(int i = 0 ;i < n;i ++){
		shoes.mutable_reference_at(i) = s[i] ; 
	}
 
	for(int i = 0 ;i < n / 2; i++){	
		int pos = shoes.find(-shoes[0]) ; 
 
		ret += pos - 1;  
 
		if( shoes[0] > 0 ){
			ret++ ;
		}
		shoes.erase(pos , 1) ; 
		shoes.erase(0 , 1) ; 
 
	}
 
	return ret;
}

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