Submission #789852

#	Time	Username	Problem	Language	Result	Execution time	Memory
789852		ezzzay	Arranging Shoes (IOI19_shoes)	C++14	15 / 100	20 ms	1864 KiB

shoes

#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
long long count_swaps(vector<int> s) {
   if(s.size()<=16){
       long long k=0;
       int g=0;
       for(int i=0;i<s.size();i++){
           if(s[i]<0){ 
               int idx=i;
               while(idx!=g){
                   swap(s[idx],s[idx-1]);
                   k++;
                   idx--;
               }
               int j;
               for(j=i+1;j<s.size();j++){
                   if(abs(s[i])==s[j])break;
               }
               idx=j;
               while(idx!=g+1){
                   swap(s[idx],s[idx-1]);
                   k++;
                   idx--;
               }
               g+=2;
           }
       }
		return k;
	}
	long long k=0;
	int g=0;
	for(int i=0;i<s.size();i++){
	    if(s[i]<0){
	        k+=abs(g-i);
	        g+=2;
	    }
	}
	return k;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:8:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |        for(int i=0;i<s.size();i++){
      |                    ~^~~~~~~~~
shoes.cpp:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |                for(j=i+1;j<s.size();j++){
      |                          ~^~~~~~~~~
shoes.cpp:33:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for(int i=0;i<s.size();i++){
      |              ~^~~~~~~~~

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