제출 #831757

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
831757	2023-08-20 13:24:48	finn__	고대 책들 (IOI17_books)	C++17	50 / 100	1408 ms	55088 KiB

books

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#include "books.h"
#include <bits/stdc++.h>
using namespace std;
using L = long long;
long long minimum_walk(std::vector<int> p, int s)
{
    size_t const n = p.size();
    L ans = 0;
    for (int i = 0; i < n; ++i)
        ans += abs(i - p[i]);
    set<int> unexplored;
    for (int i = 0; i < n; ++i)
        if (p[i] != i)
            unexplored.insert(i);
    int a = s, b = s;
    auto explore_cycle = [&](int u)
    {
        auto it = unexplored.find(u);
        while (it != unexplored.end())
        {
            a = min(a, u);
            b = max(b, u);
            u = p[u];
            unexplored.erase(it);
            it = unexplored.find(u);
        }
 
 
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컴파일 시 표준 에러 (stderr) 메시지

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:10:23: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare]
   10 |     for (int i = 0; i < n; ++i)
      |                     ~~^~~
books.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; i < n; ++i)
      |                     ~~^~~

• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 28 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30