Submission #105048

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
105048	2019-04-10T10:03:33 Z	bert30702	Ancient Books (IOI17_books)	C++17	22 / 100	444 ms	54508 KB

books

#include <bits/stdc++.h>
#include "books.h"
#define pii pair<int, int>
#define F first
#define S second
using namespace std;
const int MX = 1e6 + 100;
int boss[MX], sz[MX];
int Find(int u) {
	return boss[u] == u ? u : boss[u] = Find(boss[u]);
}
void merge(int a, int b) {
	a = Find(a), b = Find(b);
	if(a == b) return;
	boss[a] = b;
	sz[b] += sz[a];
}
priority_queue<int> pq[MX];
int G[MX];
long long minimum_walk(vector<int> p, int s) {
	int n = p.size();
	long long sum = 0, cnt = 0;
	for(int i = 0; i < n; i ++) {
		boss[i] = i;
		sz[i] = 1;
		cnt += (i != s and p[i] == i);
		G[p[i]] = max(G[p[i]], i);
		G[i]    = max(G[i], p[i]);
	}
	for(int i = 0; i < n; i ++) sum += abs(i - p[i]), merge(i, p[i]);
	vector<pair<int, pii> > E;
	for(int i = 0; i + 1 < n; i ++) {
		if(p[i] == i and i != s) continue;
		if(Find(i) == Find(i + 1)) continue;
		int ptr = i + 1, mx = i;
		while(ptr <= G[i] or (ptr != s and ptr < n and p[ptr] == ptr)) {
			if(ptr <= G[i]) mx = ptr;
			G[i] = max(G[i], G[ptr]);
			merge(i, ptr);
			ptr ++;
		}
		if(ptr < n) E.push_back({ptr - mx, {i, ptr}});
		i = ptr - 1;
	}
	sort(E.begin(), E.end());
	for(auto it: E) {
		if(Find(it.S.F) != Find(it.S.S)) {
			merge(it.S.F, it.S.S);
			sum += 2 * it.F;
		}
	}
	return sum;
}
//main () {
//	cout << minimum_walk({2, 3, 0, 1}, 0);
//}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	31616 KB	Output is correct
2	Correct	34 ms	31616 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	35 ms	31608 KB	Output is correct
5	Correct	33 ms	31744 KB	Output is correct
6	Correct	33 ms	31616 KB	Output is correct
7	Correct	36 ms	31616 KB	Output is correct
8	Correct	32 ms	31608 KB	Output is correct
9	Correct	30 ms	31616 KB	Output is correct
10	Correct	34 ms	31608 KB	Output is correct
11	Correct	32 ms	31608 KB	Output is correct
12	Correct	35 ms	31716 KB	Output is correct
13	Correct	31 ms	31616 KB	Output is correct
14	Correct	33 ms	31616 KB	Output is correct
15	Correct	32 ms	31608 KB	Output is correct
16	Correct	33 ms	31744 KB	Output is correct
17	Correct	33 ms	31736 KB	Output is correct
18	Correct	31 ms	31588 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	31616 KB	Output is correct
2	Correct	34 ms	31616 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	35 ms	31608 KB	Output is correct
5	Correct	33 ms	31744 KB	Output is correct
6	Correct	33 ms	31616 KB	Output is correct
7	Correct	36 ms	31616 KB	Output is correct
8	Correct	32 ms	31608 KB	Output is correct
9	Correct	30 ms	31616 KB	Output is correct
10	Correct	34 ms	31608 KB	Output is correct
11	Correct	32 ms	31608 KB	Output is correct
12	Correct	35 ms	31716 KB	Output is correct
13	Correct	31 ms	31616 KB	Output is correct
14	Correct	33 ms	31616 KB	Output is correct
15	Correct	32 ms	31608 KB	Output is correct
16	Correct	33 ms	31744 KB	Output is correct
17	Correct	33 ms	31736 KB	Output is correct
18	Correct	31 ms	31588 KB	Output is correct
19	Correct	32 ms	31736 KB	Output is correct
20	Correct	32 ms	31488 KB	Output is correct
21	Correct	34 ms	31608 KB	Output is correct
22	Correct	31 ms	31616 KB	Output is correct
23	Correct	33 ms	31736 KB	Output is correct
24	Correct	35 ms	31708 KB	Output is correct
25	Correct	33 ms	31608 KB	Output is correct
26	Correct	34 ms	31684 KB	Output is correct
27	Correct	34 ms	31716 KB	Output is correct
28	Correct	32 ms	31740 KB	Output is correct
29	Correct	32 ms	31736 KB	Output is correct

Subtask #3

0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	31616 KB	Output is correct
2	Correct	34 ms	31616 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	35 ms	31608 KB	Output is correct
5	Correct	33 ms	31744 KB	Output is correct
6	Correct	33 ms	31616 KB	Output is correct
7	Correct	36 ms	31616 KB	Output is correct
8	Correct	32 ms	31608 KB	Output is correct
9	Correct	30 ms	31616 KB	Output is correct
10	Correct	34 ms	31608 KB	Output is correct
11	Correct	32 ms	31608 KB	Output is correct
12	Correct	35 ms	31716 KB	Output is correct
13	Correct	31 ms	31616 KB	Output is correct
14	Correct	33 ms	31616 KB	Output is correct
15	Correct	32 ms	31608 KB	Output is correct
16	Correct	33 ms	31744 KB	Output is correct
17	Correct	33 ms	31736 KB	Output is correct
18	Correct	31 ms	31588 KB	Output is correct
19	Correct	32 ms	31736 KB	Output is correct
20	Correct	32 ms	31488 KB	Output is correct
21	Correct	34 ms	31608 KB	Output is correct
22	Correct	31 ms	31616 KB	Output is correct
23	Correct	33 ms	31736 KB	Output is correct
24	Correct	35 ms	31708 KB	Output is correct
25	Correct	33 ms	31608 KB	Output is correct
26	Correct	34 ms	31684 KB	Output is correct
27	Correct	34 ms	31716 KB	Output is correct
28	Correct	32 ms	31740 KB	Output is correct
29	Correct	32 ms	31736 KB	Output is correct
30	Correct	444 ms	51392 KB	Output is correct
31	Correct	374 ms	51320 KB	Output is correct
32	Correct	177 ms	51192 KB	Output is correct
33	Incorrect	275 ms	54508 KB	3rd lines differ - on the 1st token, expected: '2121672', found: '2121820'
34	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	34 ms	31724 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	32 ms	31616 KB	Output is correct
2	Correct	34 ms	31616 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	35 ms	31608 KB	Output is correct
5	Correct	33 ms	31744 KB	Output is correct
6	Correct	33 ms	31616 KB	Output is correct
7	Correct	36 ms	31616 KB	Output is correct
8	Correct	32 ms	31608 KB	Output is correct
9	Correct	30 ms	31616 KB	Output is correct
10	Correct	34 ms	31608 KB	Output is correct
11	Correct	32 ms	31608 KB	Output is correct
12	Correct	35 ms	31716 KB	Output is correct
13	Correct	31 ms	31616 KB	Output is correct
14	Correct	33 ms	31616 KB	Output is correct
15	Correct	32 ms	31608 KB	Output is correct
16	Correct	33 ms	31744 KB	Output is correct
17	Correct	33 ms	31736 KB	Output is correct
18	Correct	31 ms	31588 KB	Output is correct
19	Correct	32 ms	31736 KB	Output is correct
20	Correct	32 ms	31488 KB	Output is correct
21	Correct	34 ms	31608 KB	Output is correct
22	Correct	31 ms	31616 KB	Output is correct
23	Correct	33 ms	31736 KB	Output is correct
24	Correct	35 ms	31708 KB	Output is correct
25	Correct	33 ms	31608 KB	Output is correct
26	Correct	34 ms	31684 KB	Output is correct
27	Correct	34 ms	31716 KB	Output is correct
28	Correct	32 ms	31740 KB	Output is correct
29	Correct	32 ms	31736 KB	Output is correct
30	Correct	444 ms	51392 KB	Output is correct
31	Correct	374 ms	51320 KB	Output is correct
32	Correct	177 ms	51192 KB	Output is correct
33	Incorrect	275 ms	54508 KB	3rd lines differ - on the 1st token, expected: '2121672', found: '2121820'
34	Halted	0 ms	0 KB	-