Submission #253492

#	Time	Username	Problem	Language	Result	Execution time	Memory
253492		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 < long long > s ) {
    long long n = s . size ( ) ;
    long long x = 0 ;
    long long y = 0 ;
    while ( s . size ( ) > 0 ) {
        for ( long long i = 0 ; i < s . size ( ) ; i ++ ) {
            if ( s [ i ] < 0 ) {
                y = abs ( s [ i ] ) ;
                for ( long long j = 0 ; j < s . size ( ) ; j ++ ) {
                    if ( s [ j ] == y ) {
                        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 ;
            }
        }
    }
}    

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<long long int>)':
shoes.cpp:16:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for ( long long i = 0 ; i < s . size ( ) ; i ++ ) {
                                 ~~^~~~~~~~~~~~~~
shoes.cpp:19:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for ( long long j = 0 ; j < s . size ( ) ; j ++ ) {
                                         ~~^~~~~~~~~~~~~~
shoes.cpp:12:15: warning: unused variable 'n' [-Wunused-variable]
     long long n = s . size ( ) ;
               ^
shoes.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }    
 ^
/tmp/ccGB0qmB.o: In function `main':
grader.cpp:(.text.startup+0x272): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status