Submission #1065715

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065715		TheQuantiX	Ancient Books (IOI17_books)	C++17	12 / 100	1 ms	600 KiB

books

#include <bits/stdc++.h>
#include "books.h"

using namespace std;
using ll = long long;

constexpr ll INF = 1000000000000000000LL;

ll n, m, q, k, x, y, a, b, c;

map< pair< vector<int>, pair<int, int> >, ll > mp;
vector<int> perfect;

long long minimum_walk(vector<int> p, int s) {
    ll num = 0;
    bool fl = 1;
    for (int i = 0; i < p.size(); i++) {
        num += abs(i - p[i]);
        if (i != p[i]) {
            fl = 0;
        }
        if (fl) {
            num += 2;
        }
    }
    if (fl) {
        num = 0;
    }
    return num;
    // for (int i = 0; i < p.size(); i++) {
    //     perfect.push_back(i);
    // }
    // deque< pair< vector<int>, pair<int, int> > > q;
    // q.push_back({p, {s, -1}});
    // mp[{p, {s, -1}}] = 0;
    // while (!q.empty()) {
    //     auto [p, p2] = q[0];
    //     auto [s, carry] = p2;
    //     q.pop_front();
    //     // for (auto i : p) {
    //     //     cout << i << ' ';
    //     // }
    //     // cout << endl;
    //     // cout << s << ' ' << carry << endl;
    //     if (p == perfect && s == 0 && carry == -1) {
    //         return mp[{p, {s, carry}}];
    //     }
    //     ll d = mp[{p, {s, carry}}];
    //     swap(carry, p[s]);
    //     if (!mp.count({p, {s, carry}})) {
    //         q.push_front({p, {s, carry}});
    //         mp[{p, {s, carry}}] = d;
    //     }
    //     swap(carry, p[s]);
    //     if (s > 0 && !mp.count({p, {s - 1, carry}})) {
    //         q.push_back({p, {s - 1, carry}});
    //         mp[{p, {s - 1, carry}}] = d + 1;
    //     }
    //     if (s < p.size() - 1 && !mp.count({p, {s + 1, carry}})) {
    //         q.push_back({p, {s + 1, carry}});
    //         mp[{p, {s + 1, carry}}] = d + 1;
    //     }
    // }
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:17:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for (int i = 0; i < p.size(); i++) {
      |                     ~~^~~~~~~~~~

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