Submission #1049667

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1049667	2024-08-09T03:45:05 Z	Gromp15	Ancient Books (IOI17_books)	C++17	70 / 100	1391 ms	370572 KB

books

#include <bits/stdc++.h>
#define ll long long
#include "books.h"
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define ar array
using namespace std;
template<typename T> bool ckmin(T &a, const T &b) { return a > b ? a = b, 1 : 0; }
template<typename T> bool ckmax(T &a, const T &b) { return a < b ? a = b, 1 : 0; }

struct seg {
	int N; vector<vector<ar<int, 2>>> adj;
	seg(int n) : N(1<<(__lg(n)+1)), adj(2*N) {
		for (int i = 2; i < 2*N; i++) adj[i].push_back({i >> 1, 0});
	}
	void add_edge(int x, int y) {
		adj[x+N].push_back({y+N, 1});
	}
	void add_edge(int node, int nl, int nr, int ql, int qr, int x) { // l and r go to x
		if (ql > nr || qr < nl) return;
		if (ql <= nl && nr <= qr) {
			adj[node].push_back({x + N, 0});
			return;
		}
		int mid = (nl+nr)/2;
		add_edge(node * 2, nl, mid, ql, qr, x);
		add_edge(node * 2 + 1, mid + 1, nr, ql, qr, x);
	}
	void bfs(vector<int>& dist, vector<int> nodes) {
		vector<int> dist2(2 * N, 2e9);
		for (int i = 0; i < sz(dist); i++) dist2[i + N] = dist[i];
		deque<int> q;
		vector<int> idx(sz(dist));
		iota(all(idx), 0);
		sort(all(idx), [&](int x, int y) { return dist[x] < dist[y]; });
		int on = 1;
		q.emplace_back(idx[0] + N);
		while (q.size()) {
			int v = q[0]; q.pop_front();
			for (auto [u, w] : adj[v]) { 
				if (ckmin(dist2[u], dist2[v] + w)) { 
					if (!w) q.emplace_front(u);
					else q.emplace_back(u);
				}
			}
			if (on < sz(dist) && (q.empty() || dist[idx[on]] <= dist2[q[0]])) {
				q.emplace_front(idx[on++] + N);
			}
		}
		assert(on == sz(dist));
		for (int i = 0; i < sz(dist); i++) dist[i] = dist2[i + N];
	}
};

long long minimum_walk(std::vector<int> p, int s) {
	int n = p.size();
	{
		int l = s, r = s;
		bool f = 0;
		for (int i = s; i >= 0; i--) if (i != p[i]) l = i, f = 1;
		for (int i = s; i < n; i++) if (i != p[i]) r = i, f = 1;
		if (!f) {
			return 0;
		}
		p = vector<int>(p.begin() + l, p.begin() + r + 1);
		n = r - l + 1;
	}
	seg st(n);
	for (int i = 0; i < n; i++) {
		if (i) st.add_edge(i, i-1);
		if (i+1 < n) st.add_edge(i, i+1);
	}
	vector<bool> vis(n);
	ll ans = 0;
	for (int i = 0; i < n; i++) if (!vis[i]) {
		int L = i, R = i, tmp = i;
		vector<int> pth;
		while (!vis[tmp]) { 
			ans += abs(tmp - p[tmp]);
			ckmax(R, tmp), vis[tmp] = 1;
			pth.emplace_back(tmp);
			tmp = p[tmp];
		}
		for (int v : pth) st.add_edge(1, 0, st.N-1, L, R, v);
	}
	vector<int> d1(n, 1e9), d2(n, 1e9);
	d1[0] = 0, d2[n-1] = 0;
	st.bfs(d1, {0});
	st.bfs(d2, {n-1});
	vector<int> d3(n);
	for (int i = 0; i < n; i++) d3[i] = d1[i] + d2[i];
	vector<int> tot(n);
	iota(all(tot), 0);
	st.bfs(d3, tot);
	return ans + 2 * d3[s];
}

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	600 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	600 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	1 ms	604 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	604 KB	Output is correct
23	Correct	1 ms	604 KB	Output is correct
24	Correct	1 ms	600 KB	Output is correct
25	Correct	1 ms	604 KB	Output is correct
26	Correct	1 ms	604 KB	Output is correct
27	Correct	1 ms	604 KB	Output is correct
28	Correct	1 ms	604 KB	Output is correct
29	Correct	1 ms	604 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	600 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	1 ms	604 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	604 KB	Output is correct
23	Correct	1 ms	604 KB	Output is correct
24	Correct	1 ms	600 KB	Output is correct
25	Correct	1 ms	604 KB	Output is correct
26	Correct	1 ms	604 KB	Output is correct
27	Correct	1 ms	604 KB	Output is correct
28	Correct	1 ms	604 KB	Output is correct
29	Correct	1 ms	604 KB	Output is correct
30	Correct	1193 ms	302008 KB	Output is correct
31	Correct	1239 ms	370572 KB	Output is correct
32	Correct	55 ms	8016 KB	Output is correct
33	Correct	587 ms	189444 KB	Output is correct
34	Correct	584 ms	189444 KB	Output is correct
35	Correct	629 ms	197540 KB	Output is correct
36	Correct	777 ms	219108 KB	Output is correct
37	Correct	763 ms	261896 KB	Output is correct
38	Correct	784 ms	284064 KB	Output is correct
39	Correct	801 ms	284384 KB	Output is correct
40	Correct	794 ms	304824 KB	Output is correct
41	Correct	1020 ms	319376 KB	Output is correct
42	Correct	964 ms	361144 KB	Output is correct
43	Correct	1391 ms	214916 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	600 KB	Output is correct
2	Correct	1 ms	604 KB	Output is correct
3	Correct	1 ms	604 KB	Output is correct
4	Correct	1 ms	604 KB	Output is correct
5	Correct	0 ms	604 KB	Output is correct
6	Correct	1 ms	600 KB	Output is correct
7	Correct	1 ms	600 KB	Output is correct
8	Correct	1 ms	604 KB	Output is correct
9	Correct	1 ms	604 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	604 KB	Output is correct
12	Correct	1 ms	604 KB	Output is correct
13	Correct	1 ms	604 KB	Output is correct
14	Correct	1 ms	604 KB	Output is correct
15	Correct	1 ms	604 KB	Output is correct
16	Correct	1 ms	604 KB	Output is correct
17	Correct	1 ms	604 KB	Output is correct
18	Correct	1 ms	604 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	1 ms	604 KB	Output is correct

Subtask #5
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	1 ms	600 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	344 KB	Output is correct
12	Correct	0 ms	348 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	604 KB	Output is correct
20	Correct	1 ms	604 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	604 KB	Output is correct
23	Correct	1 ms	604 KB	Output is correct
24	Correct	1 ms	600 KB	Output is correct
25	Correct	1 ms	604 KB	Output is correct
26	Correct	1 ms	604 KB	Output is correct
27	Correct	1 ms	604 KB	Output is correct
28	Correct	1 ms	604 KB	Output is correct
29	Correct	1 ms	604 KB	Output is correct
30	Correct	1193 ms	302008 KB	Output is correct
31	Correct	1239 ms	370572 KB	Output is correct
32	Correct	55 ms	8016 KB	Output is correct
33	Correct	587 ms	189444 KB	Output is correct
34	Correct	584 ms	189444 KB	Output is correct
35	Correct	629 ms	197540 KB	Output is correct
36	Correct	777 ms	219108 KB	Output is correct
37	Correct	763 ms	261896 KB	Output is correct
38	Correct	784 ms	284064 KB	Output is correct
39	Correct	801 ms	284384 KB	Output is correct
40	Correct	794 ms	304824 KB	Output is correct
41	Correct	1020 ms	319376 KB	Output is correct
42	Correct	964 ms	361144 KB	Output is correct
43	Correct	1391 ms	214916 KB	Output is correct
44	Correct	1 ms	600 KB	Output is correct
45	Correct	1 ms	604 KB	Output is correct
46	Correct	1 ms	604 KB	Output is correct
47	Correct	1 ms	604 KB	Output is correct
48	Correct	0 ms	604 KB	Output is correct
49	Correct	1 ms	600 KB	Output is correct
50	Correct	1 ms	600 KB	Output is correct
51	Correct	1 ms	604 KB	Output is correct
52	Correct	1 ms	604 KB	Output is correct
53	Correct	0 ms	348 KB	Output is correct
54	Correct	1 ms	604 KB	Output is correct
55	Correct	1 ms	604 KB	Output is correct
56	Correct	1 ms	604 KB	Output is correct
57	Correct	1 ms	604 KB	Output is correct
58	Correct	1 ms	604 KB	Output is correct
59	Correct	1 ms	604 KB	Output is correct
60	Correct	1 ms	604 KB	Output is correct
61	Correct	1 ms	604 KB	Output is correct
62	Correct	1 ms	604 KB	Output is correct
63	Correct	1 ms	604 KB	Output is correct
64	Correct	936 ms	189672 KB	Output is correct
65	Incorrect	750 ms	285192 KB	3rd lines differ - on the 1st token, expected: '7226436', found: '8929100'
66	Halted	0 ms	0 KB	-

Submission #1049667

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 28.0 / 28.0

Subtask #4 20.0 / 20.0

Subtask #5 0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
28.0 / 28.0

Subtask #4
20.0 / 20.0

Subtask #5
0 / 30.0