Submission #148620

#	Time	Username	Problem	Language	Result	Execution time	Memory
148620		nandonathaniel	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	32 ms	1932 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

long long count_swaps(vector<int> s) {
	int kecil,besar;
	for(int i=0;i<s.size();i++){
		if(s[i]<0)kecil=s[i];
		else besar=s[i];
	}
	int ans=0;
	for(int i=0;i<s.size();i++){
		if(i%2==0){
			if(s[i]!=kecil)ans++;
		}
		else{
			if(s[i]!=besar)ans++;
		}
	}
	ans/=2;
	return ans;;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:7:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<s.size();i++){
              ~^~~~~~~~~
shoes.cpp:12:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<s.size();i++){
              ~^~~~~~~~~
shoes.cpp:17:4: warning: 'besar' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(s[i]!=besar)ans++;
    ^~
shoes.cpp:14:4: warning: 'kecil' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(s[i]!=kecil)ans++;
    ^~

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