Submission #232425

#	Time	Username	Problem	Language	Result	Execution time	Memory
232425		jam_xd_	Arranging Shoes (IOI19_shoes)	C++17	Compilation error	0 ms	0 KiB

shoes

#include <bits/stdc++.h>

using namespace std;

int main()
{

    int tamano;
    cin>>tamano;


    deque<int>s(tamano);
    for(int i=0;i<tamano;i++){
        cin>>s[i];
    }
   int contador=0;
	int swaps = 0;

	int aux;

	for(int i=0;i<s.size();i++){
		if((s[i] > 0 && i%2 == 0 && i!= 0) or (s[0] > 0 && i==0)){
			for(int j=i;j<s.size();j++){
				contador++;
				if(s[j] < 0 && j%2==0){
					swaps = swaps + contador;
					aux = s[i];
					s[i] = s[j];
					s[j] = aux;
					contador = 0;
					break;
				}
			}
		}

		if(s[i] < 0 && i%2 != 0){
			for(int k=i;k<s.size();k++){
				contador++;
				if(s[k] > 0 && k%2==0 && i!= 0){
					swaps = swaps + contador;
					aux = s[i];
					s[i] = s[k];
					s[k] = aux;
					contador = 0;
					break;
				}
			}
		}
	}

	cout<<swaps<<endl;
    return 0;
}

Compilation message (stderr)

shoes.cpp: In function 'int main()':
shoes.cpp:21:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<s.size();i++){
              ~^~~~~~~~~
shoes.cpp:23:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=i;j<s.size();j++){
                ~^~~~~~~~~
shoes.cpp:37:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int k=i;k<s.size();k++){
                ~^~~~~~~~~
/tmp/ccuqoYrL.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccQgCRGE.o:shoes.cpp:(.text.startup+0x0): first defined here
/tmp/ccuqoYrL.o: In function `main':
grader.cpp:(.text.startup+0x282): undefined reference to `count_swaps(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status