Submission #282838

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
282838	2020-08-25T04:21:13 Z	suren	Arranging Shoes (IOI19_shoes)	C++14	Compilation error	0 ms	0 KB

shoes

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define mk make_pair
#define pb push_back
#define F first
#define S second
 
int count_swaps( vector < int > vc ){
	
	int ans = 0, i;
	
	int flag = true;
	
	for( i = 1; i < vc.size(); i ++ ){
		if( vc[i] != vc[i-1] ){
			flag = false;
			break;
		}
	}
	
	if( flag == true ){
		for(::);
		vector < int > srg;
		vector < int > eyrg;
		
		for( i = 0; i < vc.size(); i ++ ){
			if( vc[i] < 0 )
				srg.pb( i );
			if( vc[i] > 0 )
				eyrg.pb( i );
		}
		reverse( srg.begin(), srg.end() );
		reverse( eyrg.begin(), eyrg.end() );
		for( i = 0; i < vc.size(); i ++ ){
			if( vc[i] == 0 )
				continue;
			if( vc[ i ] < 0 ){
				ans += eyrg[ eyrg.size() - 1 ] - i;
				vc[ eyrg[ eyrg.size() - 1 ] ] = 0;
				eyrg.pop_back();
			}
			else{
				ans += srg[ srg.size() - 1 ] - i;
				vc[ srg[ srg.size() - 1 ] ] = 0;
				srg.pop_back();
			}
		}
		
		return ans;
	}
	
	while( vc.size() > 0 ){
		for( i = 1; i < vc.size(); i ++ ){
			if( vc[i] == vc[0] * -1 ){
				if( vc[i] < 0 ){
					ans += i;
					vc.erase( vc.begin() + i );
					vc.erase( vc.begin() + 0 );
					break;
				}
				else{
					ans += i-1;
					vc.erase( vc.begin() + i );
					vc.erase( vc.begin() + 0 );
					break;
				}
			}
		}
	}
	return ans;
}

Compilation message

shoes.cpp: In function 'int count_swaps(std::vector<int>)':
shoes.cpp:15:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for( i = 1; i < vc.size(); i ++ ){
      |              ~~^~~~~~~~~~~
shoes.cpp:23:9: error: expected id-expression before ')' token
   23 |   for(::);
      |         ^
shoes.cpp:24:21: error: expected initializer before ';' token
   24 |   vector < int > srg;
      |                     ^
shoes.cpp:24:21: error: could not convert 'srg' from 'std::vector<int>' to 'bool'
shoes.cpp:25:18: error: expected primary-expression before 'eyrg'
   25 |   vector < int > eyrg;
      |                  ^~~~
shoes.cpp:25:17: error: expected ')' before 'eyrg'
   25 |   vector < int > eyrg;
      |                 ^~~~~
      |                 )
shoes.cpp:23:6: note: to match this '('
   23 |   for(::);
      |      ^
shoes.cpp:25:18: error: 'eyrg' was not declared in this scope
   25 |   vector < int > eyrg;
      |                  ^~~~
shoes.cpp:27:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   for( i = 0; i < vc.size(); i ++ ){
      |               ~~^~~~~~~~~~~
shoes.cpp:29:5: error: 'srg' was not declared in this scope
   29 |     srg.pb( i );
      |     ^~~
shoes.cpp:31:5: error: 'eyrg' was not declared in this scope
   31 |     eyrg.pb( i );
      |     ^~~~
shoes.cpp:33:12: error: 'srg' was not declared in this scope
   33 |   reverse( srg.begin(), srg.end() );
      |            ^~~
shoes.cpp:34:12: error: 'eyrg' was not declared in this scope
   34 |   reverse( eyrg.begin(), eyrg.end() );
      |            ^~~~
shoes.cpp:35:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for( i = 0; i < vc.size(); i ++ ){
      |               ~~^~~~~~~~~~~
shoes.cpp:54:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   for( i = 1; i < vc.size(); i ++ ){
      |               ~~^~~~~~~~~~~