Submission #289306

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
289306	2020-09-02 14:26:10	Touubs	Ancient Books (IOI17_books)	C++17	50 / 100	156 ms	8388 KiB

books

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#include "books.h"
#include <bits/stdc++.h>
long long minimum_walk(std::vector<int> p, int s) {
    std::vector<bool> visited(p.size());
    long long res = 0;
    int maxVis = 0;
    for (int i = 0; i < p.size() && p[i] == i && i < s; i++);
    for (int i = 0; i < p.size(); i++) {
  if (maxVis < i) res+=2;
  res += abs(p[i] - i);
  maxVis = std::max(maxVis, p[i]);
    }
    for (int i = p.size() - 1; i > s && p[i] == i ; i--, res-=2);
    return res;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < p.size() && p[i] == i && i < s; i++);
      |                     ~~^~~~~~~~~~
books.cpp:10:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     for (int i = 0; i < p.size(); i++) {
      |                     ~~^~~~~~~~~~

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