Submission #790955

#	Time	Username	Problem	Language	Result	Execution time	Memory
790955		ezzzay	Arranging Shoes (IOI19_shoes)	C++14	25 / 100	15 ms	3128 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;
       while(s.size()>0){
            int x=abs(s[0]);
            int i;
            for(i=1;i<s.size();i++){
               if(abs(s[i])==x)break;
            }
            while(1){
               if(i==1)break;
               swap(s[i],s[i-1]);
               i--;
               k++;
            }
          if(s[0]>0)k++;
          s.erase(s.begin());
          s.erase(s.begin());
       }
       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:10:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |             for(i=1;i<s.size();i++){
      |                     ~^~~~~~~~~
shoes.cpp:28:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for(int i=0;i<s.size();i++){
      |              ~^~~~~~~~~

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