Submission #253513

#	Time	Username	Problem	Language	Result	Execution time	Memory
253513		Badrangiikh	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1087 ms	1912 KiB

shoes

#include<bits/stdc++.h>
#include <deque> 
#include <cmath>
using namespace std;
 
#define ll long long 
 
/*freopen("input.txt","r",stdin);
freopen("output.txt","w",stdout);*/
 
long long count_swaps ( vector < int > s ) {
    int n = s . size ( ) ;
    long long x = 0 ;
    while ( s . size ( ) > 0 ) {
      	int n = s . size ( ) ;
        for ( int i = 0 ; i < n ; i ++ ) {
            if ( s [ i ] < 0 ) {
                for ( int j = 0 ; j < n ; j ++ ) {
                    if ( s [ j ] == s [ i ] * ( -1 ) ) {
                        if ( j > i ) {
                            x += ( i + j - 1 ) ;
                            s . erase ( s . begin ( ) + j ) ;
                            s . erase ( s . begin ( ) + i ) ;
                        }
                        else {
                            x += ( i + j ) ;
                            s . erase ( s . begin ( ) + i ) ;
                            s . erase ( s . begin ( ) + j ) ;
                        }
                        break ;
                    }
                }
                break ;
            }
        }
    }
  	return x ;
} 

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:12:9: warning: unused variable 'n' [-Wunused-variable]
     int n = s . size ( ) ;
         ^

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