제출 #144707

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
144707		chubyxdxd	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1072 ms	1916 KiB

shoes

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
long long count_swaps(std::vector<int> s) {
  ll tam=s.size();
  if(tam/2==1){
    if(s[0]<0){
      return 0;
    }
    else{
      return 1;
    }
  }
  ll hi=0;
  ll h,c=0,f,aux;
  while(hi<tam){
    for(int i=hi;i<tam;i++){
      if(s[i]<0){
        h=i;
        f=s[i];
        c+=abs(hi-i);
        break;
      }
    }
    for(int i=h;i>hi;i--){
      aux=s[i-1];
      s[i-1]=s[i];
      s[i]=aux;
    }
    hi++;
    /*cout<<c<<" - "<<hi<<endl;
    for(int i=0;i<tam;i++){
        cout<<s[i]<<" ";
    }
    cout<<endl;*/
    for(int i=hi;i<tam;i++){
      if((s[i]*-1)==f){
        h=i;
        c+=abs(hi-i);
        break;
      }
    }
    for(int i=h;i>hi;i--){
      aux=s[i-1];
      s[i-1]=s[i];
      s[i]=aux;
    }
    hi++;
    /*cout<<c<<" - "<<hi<<endl;
    for(int i=0;i<tam;i++){
        cout<<s[i]<<" ";
    }
    cout<<endl;*/
  }
  return c;
}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:38:7: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]
       if((s[i]*-1)==f){
       ^~
shoes.cpp:26:13: warning: 'h' may be used uninitialized in this function [-Wmaybe-uninitialized]
     for(int i=h;i>hi;i--){
             ^

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