Submission #798284

#	Time	Username	Problem	Language	Result	Execution time	Memory
798284		PixelCat	Ancient Books (IOI17_books)	C++14	12 / 100	1 ms	304 KiB

books

#include "books.h"

#ifdef NYAOWO
#include "grader.cpp"
#endif

#include <bits/stdc++.h>
#define For(i, a, b) for(int i = a; i <= b; i++)
#define Forr(i, a, b) for(int i = a; i >= b; i--)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define sz(x) ((int)x.size())
#define eb emplace_back
#define int LL
using namespace std;
using i32 = int32_t;
using LL = long long;
using pii = pair<int, int>;

LL minimum_walk(vector<i32> p, i32 s) {
    assert(s >= 0);
    int n = sz(p);
    int ans = 0;
    int mx = 0;
    int oao = 0;
    vector<int> vis(n, 0);
    For(i, 0, n - 1) if(p[i] != i && !vis[i]) {
        int cur = i;
        int l = n + 1;
        int r = -1;
        do {
            l = min(l, cur);
            r = max(r, cur);
            ans += abs(p[cur] - cur);
            cur = p[cur];
            vis[cur] = 1;
        } while(cur != i);
        if(l > mx) oao = l;
        mx = r;
    }
    ans += oao * 2;
    return ans;
}

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