Submission #811309

# Submission time Handle Problem Language Result Execution time Memory
811309 2023-08-07T03:59:49 Z LittleCube Ancient Books (IOI17_books) C++17
100 / 100
157 ms 72236 KB
#pragma GCC optimize("Ofast,unroll-loops")
#include "books.h"
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

int n, reach[1000006], g[1000006], l, r;
vector<int> out[1000006];
long long minimum_walk(vector<int> p, int s)
{
	{
		n = p.size();
		int l = 0, r = n - 1;
		while (l < s && p[l] == l)
			l++;
		while (r > s && p[r] == r)
			r--;
		p = vector<int>(p.begin() + l, p.begin() + r + 1);
		n = p.size();
		s -= l;
		for (auto &i : p)
			i -= l;
	}

	ll ans = 0;

	vector<pii> edge;
	for (int i = 0; i < n; i++)
		reach[i] = i;
	for (int i = 0; i < n; i++)
	{
		ans += abs(p[i] - i);
		int u = min(p[i], i), v = max(p[i], i);
		if (v <= s || s <= u)
			reach[u] = max(reach[u], v);
		else
			edge.emplace_back(pii(u, v));
	}
	for (int i = 1; i < n; i++)
		reach[i] = max(reach[i - 1], reach[i]);
	int last = 0, m = 0;
	for (int i = 0; i < n; i++)
	{
		if (last < i)
			++m;
		g[i] = m;
		last = max(last, reach[i]);
	}
	int L = g[s], R = g[s];
	for (auto &[u, v] : edge)
	{
		u = g[u], v = g[v];
		L = min(L, u);
		R = max(R, v);
		out[u].emplace_back(v);
		out[v].emplace_back(u);
	}
	ans += 2 * (L + m - R);
	int l = g[s] + 1, r = g[s] - 1;
	ans -= 2;
	while (L < l || r < R)
	{
		ans += 2;
		int nl = max(L, l - 1), nr = min(R, r + 1);
		while (nl < l || r < nr)
		{
			if (nl < l)
			{
				l--;
				for (auto i : out[l])
					nl = min(i, nl), nr = max(i, nr);
			}
			else
			{
				r++;
				for (auto i : out[r])
					nl = min(i, nl), nr = max(i, nr);
			}
		}
	}

	return ans;
}
# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23804 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 13 ms 23692 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 13 ms 23768 KB Output is correct
8 Correct 14 ms 23736 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 13 ms 23716 KB Output is correct
11 Correct 14 ms 23800 KB Output is correct
12 Correct 13 ms 23736 KB Output is correct
13 Correct 15 ms 23764 KB Output is correct
14 Correct 13 ms 23708 KB Output is correct
15 Correct 15 ms 23720 KB Output is correct
16 Correct 13 ms 23756 KB Output is correct
17 Correct 13 ms 23748 KB Output is correct
18 Correct 14 ms 23700 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23804 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 13 ms 23692 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 13 ms 23768 KB Output is correct
8 Correct 14 ms 23736 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 13 ms 23716 KB Output is correct
11 Correct 14 ms 23800 KB Output is correct
12 Correct 13 ms 23736 KB Output is correct
13 Correct 15 ms 23764 KB Output is correct
14 Correct 13 ms 23708 KB Output is correct
15 Correct 15 ms 23720 KB Output is correct
16 Correct 13 ms 23756 KB Output is correct
17 Correct 13 ms 23748 KB Output is correct
18 Correct 14 ms 23700 KB Output is correct
19 Correct 13 ms 23804 KB Output is correct
20 Correct 14 ms 23708 KB Output is correct
21 Correct 13 ms 23764 KB Output is correct
22 Correct 13 ms 23812 KB Output is correct
23 Correct 14 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct
25 Correct 14 ms 23764 KB Output is correct
26 Correct 13 ms 23824 KB Output is correct
27 Correct 14 ms 23764 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 13 ms 23764 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23804 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 13 ms 23692 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 13 ms 23768 KB Output is correct
8 Correct 14 ms 23736 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 13 ms 23716 KB Output is correct
11 Correct 14 ms 23800 KB Output is correct
12 Correct 13 ms 23736 KB Output is correct
13 Correct 15 ms 23764 KB Output is correct
14 Correct 13 ms 23708 KB Output is correct
15 Correct 15 ms 23720 KB Output is correct
16 Correct 13 ms 23756 KB Output is correct
17 Correct 13 ms 23748 KB Output is correct
18 Correct 14 ms 23700 KB Output is correct
19 Correct 13 ms 23804 KB Output is correct
20 Correct 14 ms 23708 KB Output is correct
21 Correct 13 ms 23764 KB Output is correct
22 Correct 13 ms 23812 KB Output is correct
23 Correct 14 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct
25 Correct 14 ms 23764 KB Output is correct
26 Correct 13 ms 23824 KB Output is correct
27 Correct 14 ms 23764 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 13 ms 23764 KB Output is correct
30 Correct 94 ms 39388 KB Output is correct
31 Correct 94 ms 39408 KB Output is correct
32 Correct 84 ms 31540 KB Output is correct
33 Correct 93 ms 39420 KB Output is correct
34 Correct 94 ms 39412 KB Output is correct
35 Correct 94 ms 39404 KB Output is correct
36 Correct 101 ms 39404 KB Output is correct
37 Correct 94 ms 39432 KB Output is correct
38 Correct 95 ms 39420 KB Output is correct
39 Correct 94 ms 39408 KB Output is correct
40 Correct 95 ms 39412 KB Output is correct
41 Correct 100 ms 39408 KB Output is correct
42 Correct 94 ms 39420 KB Output is correct
43 Correct 97 ms 39404 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 13 ms 23780 KB Output is correct
3 Correct 14 ms 23788 KB Output is correct
4 Correct 14 ms 23824 KB Output is correct
5 Correct 14 ms 23764 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 14 ms 23796 KB Output is correct
8 Correct 14 ms 23792 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 14 ms 23764 KB Output is correct
11 Correct 14 ms 23792 KB Output is correct
12 Correct 13 ms 23764 KB Output is correct
13 Correct 14 ms 23764 KB Output is correct
14 Correct 13 ms 23792 KB Output is correct
15 Correct 14 ms 23716 KB Output is correct
16 Correct 14 ms 23700 KB Output is correct
17 Correct 13 ms 23808 KB Output is correct
18 Correct 13 ms 23828 KB Output is correct
19 Correct 14 ms 23764 KB Output is correct
20 Correct 14 ms 23764 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 13 ms 23796 KB Output is correct
2 Correct 13 ms 23764 KB Output is correct
3 Correct 13 ms 23804 KB Output is correct
4 Correct 13 ms 23764 KB Output is correct
5 Correct 13 ms 23692 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 13 ms 23768 KB Output is correct
8 Correct 14 ms 23736 KB Output is correct
9 Correct 13 ms 23764 KB Output is correct
10 Correct 13 ms 23716 KB Output is correct
11 Correct 14 ms 23800 KB Output is correct
12 Correct 13 ms 23736 KB Output is correct
13 Correct 15 ms 23764 KB Output is correct
14 Correct 13 ms 23708 KB Output is correct
15 Correct 15 ms 23720 KB Output is correct
16 Correct 13 ms 23756 KB Output is correct
17 Correct 13 ms 23748 KB Output is correct
18 Correct 14 ms 23700 KB Output is correct
19 Correct 13 ms 23804 KB Output is correct
20 Correct 14 ms 23708 KB Output is correct
21 Correct 13 ms 23764 KB Output is correct
22 Correct 13 ms 23812 KB Output is correct
23 Correct 14 ms 23764 KB Output is correct
24 Correct 14 ms 23820 KB Output is correct
25 Correct 14 ms 23764 KB Output is correct
26 Correct 13 ms 23824 KB Output is correct
27 Correct 14 ms 23764 KB Output is correct
28 Correct 13 ms 23764 KB Output is correct
29 Correct 13 ms 23764 KB Output is correct
30 Correct 94 ms 39388 KB Output is correct
31 Correct 94 ms 39408 KB Output is correct
32 Correct 84 ms 31540 KB Output is correct
33 Correct 93 ms 39420 KB Output is correct
34 Correct 94 ms 39412 KB Output is correct
35 Correct 94 ms 39404 KB Output is correct
36 Correct 101 ms 39404 KB Output is correct
37 Correct 94 ms 39432 KB Output is correct
38 Correct 95 ms 39420 KB Output is correct
39 Correct 94 ms 39408 KB Output is correct
40 Correct 95 ms 39412 KB Output is correct
41 Correct 100 ms 39408 KB Output is correct
42 Correct 94 ms 39420 KB Output is correct
43 Correct 97 ms 39404 KB Output is correct
44 Correct 13 ms 23764 KB Output is correct
45 Correct 13 ms 23780 KB Output is correct
46 Correct 14 ms 23788 KB Output is correct
47 Correct 14 ms 23824 KB Output is correct
48 Correct 14 ms 23764 KB Output is correct
49 Correct 13 ms 23764 KB Output is correct
50 Correct 14 ms 23796 KB Output is correct
51 Correct 14 ms 23792 KB Output is correct
52 Correct 13 ms 23764 KB Output is correct
53 Correct 14 ms 23764 KB Output is correct
54 Correct 14 ms 23792 KB Output is correct
55 Correct 13 ms 23764 KB Output is correct
56 Correct 14 ms 23764 KB Output is correct
57 Correct 13 ms 23792 KB Output is correct
58 Correct 14 ms 23716 KB Output is correct
59 Correct 14 ms 23700 KB Output is correct
60 Correct 13 ms 23808 KB Output is correct
61 Correct 13 ms 23828 KB Output is correct
62 Correct 14 ms 23764 KB Output is correct
63 Correct 14 ms 23764 KB Output is correct
64 Correct 100 ms 46060 KB Output is correct
65 Correct 96 ms 46044 KB Output is correct
66 Correct 93 ms 46176 KB Output is correct
67 Correct 96 ms 46176 KB Output is correct
68 Correct 22 ms 25932 KB Output is correct
69 Correct 23 ms 25836 KB Output is correct
70 Correct 22 ms 25932 KB Output is correct
71 Correct 22 ms 25840 KB Output is correct
72 Correct 21 ms 25836 KB Output is correct
73 Correct 22 ms 26188 KB Output is correct
74 Correct 95 ms 46052 KB Output is correct
75 Correct 97 ms 46044 KB Output is correct
76 Correct 99 ms 46216 KB Output is correct
77 Correct 92 ms 46184 KB Output is correct
78 Correct 99 ms 46132 KB Output is correct
79 Correct 108 ms 46044 KB Output is correct
80 Correct 89 ms 38312 KB Output is correct
81 Correct 157 ms 72236 KB Output is correct
82 Correct 131 ms 72188 KB Output is correct
83 Correct 101 ms 48456 KB Output is correct
84 Correct 110 ms 47836 KB Output is correct
85 Correct 95 ms 46728 KB Output is correct
86 Correct 93 ms 46296 KB Output is correct
87 Correct 120 ms 58172 KB Output is correct
88 Correct 119 ms 53168 KB Output is correct
89 Correct 109 ms 49248 KB Output is correct
90 Correct 93 ms 46136 KB Output is correct
91 Correct 94 ms 46172 KB Output is correct
92 Correct 94 ms 46048 KB Output is correct