Submission #253514

#	Time	Username	Problem	Language	Result	Execution time	Memory
253514		Badrangiikh	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 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 ) {
    long long n = s . size ( ) ;
    if ( n == 2 ) {
        if ( s [ 0 ] < s [ 1 ] ) return 0 ;
        else return 1 ;
    }
    long long x = 0 ;
    for ( long long i = 1 ; i < n ; i ++ ) {
        if ( abs ( s [ i ] ) == abs ( s [ 0 ] ) ) x ++ ;
    }
    if ( x + 1 == n ) {
        long long y = 0 ;
        long long z = 0 ;
        for ( long long i = 0 ; i < n ; i ++ ) {
            if ( s [ i ] < 0 ) {
                z += abs ( i - y ) ;
                y += 2 ;
            } 
        }
        return z ;
    }
    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 ] == ( -1 ) * s [ i ] ) {
                        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:32:15: error: redeclaration of 'long long int x'
     long long x = 0 ;
               ^
shoes.cpp:17:15: note: 'long long int x' previously declared here
     long long x = 0 ;
               ^