Submission #283548

#	Time	Username	Problem	Language	Result	Execution time	Memory
283548		test2	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1089 ms	2812 KiB

shoes

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

#define I inline void 


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 ; 
	for(int i = 0 ;i < n; i+=2){	
		for(int j = i + 1;j < n ;j ++){
			if(abs(s[i]) == abs(s[j]) && s[i] * s[j] < 0){
				for(int k = j - 1; k > i ;k --){
					swap(s[k] , s[k+1]) ; 
					ret++;
				}
				break ; 
			}
		}
		if(s[i] > s[i+1]){
			ret++ ;
		}
	}

	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