제출 #428361

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
428361		A_D	Arranging Shoes (IOI19_shoes)	C++14	0 / 100	1 ms	232 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
#define ii pair<int,int>
using namespace std;
vector<int> vec;
long long ans=0,cnt=0;
vector<int> s;
set<ii> st;
map<ii,int> mp;
void fix(int x)
{
    for(int i=0;i<s.size();i++){
        if(s[i]==x){
            for(int j=i-1;j>=cnt;j--){
                ans++;
                swap(s[j],s[j+1]);
            }
            for(int j=i+1;j<=cnt;j++){
                ans++;
                swap(s[j],s[j-1]);
            }
            break;
        }
    }
    cnt+=2;
}
long long count_swaps(std::vector<int> S){
    s=S;
    vec.clear();ans=0;cnt=0;
    for(int i=0;i<s.size();i++){
        if(s[i]<0){
            vec.push_back(abs(s[i]));
        }
    }
    int l=0,r=vec.size()-1;
    while(l<=r){
        int h=l+r;
        h%=2;
        if(h){
            cnt=l*2;
            fix(-vec[l]);
            l++;
        }
        else{
            cnt=r*2;
            fix(-vec[r]);
            r--;
        }
    }
    l=0;r=vec.size()-1;
    while(l<=r){
        int h=l+r;
        h%=2;
        if(h){
            cnt=l*2;
            fix(vec[l]);
            l++;
        }
        else{
            cnt=r*2;
            fix(vec[r]);
            r--;
        }
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'void fix(int)':
shoes.cpp:12:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:30:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~

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