Submission #105046

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
105046	2019-04-10T09:55:33 Z	bert30702	Ancient Books (IOI17_books)	C++17	22 / 100	345 ms	61220 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	30 ms	31608 KB	Output is correct
2	Correct	30 ms	31608 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	33 ms	31676 KB	Output is correct
5	Correct	35 ms	31580 KB	Output is correct
6	Correct	33 ms	31608 KB	Output is correct
7	Correct	31 ms	31700 KB	Output is correct
8	Correct	36 ms	31700 KB	Output is correct
9	Correct	31 ms	31744 KB	Output is correct
10	Correct	36 ms	31680 KB	Output is correct
11	Correct	29 ms	31608 KB	Output is correct
12	Correct	34 ms	31608 KB	Output is correct
13	Correct	31 ms	31608 KB	Output is correct
14	Correct	32 ms	31664 KB	Output is correct
15	Correct	32 ms	31740 KB	Output is correct
16	Correct	32 ms	31744 KB	Output is correct
17	Correct	32 ms	31608 KB	Output is correct
18	Correct	31 ms	31644 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	30 ms	31608 KB	Output is correct
2	Correct	30 ms	31608 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	33 ms	31676 KB	Output is correct
5	Correct	35 ms	31580 KB	Output is correct
6	Correct	33 ms	31608 KB	Output is correct
7	Correct	31 ms	31700 KB	Output is correct
8	Correct	36 ms	31700 KB	Output is correct
9	Correct	31 ms	31744 KB	Output is correct
10	Correct	36 ms	31680 KB	Output is correct
11	Correct	29 ms	31608 KB	Output is correct
12	Correct	34 ms	31608 KB	Output is correct
13	Correct	31 ms	31608 KB	Output is correct
14	Correct	32 ms	31664 KB	Output is correct
15	Correct	32 ms	31740 KB	Output is correct
16	Correct	32 ms	31744 KB	Output is correct
17	Correct	32 ms	31608 KB	Output is correct
18	Correct	31 ms	31644 KB	Output is correct
19	Correct	33 ms	31744 KB	Output is correct
20	Correct	37 ms	31864 KB	Output is correct
21	Correct	33 ms	31736 KB	Output is correct
22	Correct	30 ms	31744 KB	Output is correct
23	Correct	32 ms	31744 KB	Output is correct
24	Correct	36 ms	31732 KB	Output is correct
25	Correct	32 ms	31608 KB	Output is correct
26	Correct	34 ms	31736 KB	Output is correct
27	Correct	32 ms	31608 KB	Output is correct
28	Correct	33 ms	31608 KB	Output is correct
29	Correct	31 ms	31608 KB	Output is correct

Subtask #3

0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	30 ms	31608 KB	Output is correct
2	Correct	30 ms	31608 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	33 ms	31676 KB	Output is correct
5	Correct	35 ms	31580 KB	Output is correct
6	Correct	33 ms	31608 KB	Output is correct
7	Correct	31 ms	31700 KB	Output is correct
8	Correct	36 ms	31700 KB	Output is correct
9	Correct	31 ms	31744 KB	Output is correct
10	Correct	36 ms	31680 KB	Output is correct
11	Correct	29 ms	31608 KB	Output is correct
12	Correct	34 ms	31608 KB	Output is correct
13	Correct	31 ms	31608 KB	Output is correct
14	Correct	32 ms	31664 KB	Output is correct
15	Correct	32 ms	31740 KB	Output is correct
16	Correct	32 ms	31744 KB	Output is correct
17	Correct	32 ms	31608 KB	Output is correct
18	Correct	31 ms	31644 KB	Output is correct
19	Correct	33 ms	31744 KB	Output is correct
20	Correct	37 ms	31864 KB	Output is correct
21	Correct	33 ms	31736 KB	Output is correct
22	Correct	30 ms	31744 KB	Output is correct
23	Correct	32 ms	31744 KB	Output is correct
24	Correct	36 ms	31732 KB	Output is correct
25	Correct	32 ms	31608 KB	Output is correct
26	Correct	34 ms	31736 KB	Output is correct
27	Correct	32 ms	31608 KB	Output is correct
28	Correct	33 ms	31608 KB	Output is correct
29	Correct	31 ms	31608 KB	Output is correct
30	Correct	345 ms	58056 KB	Output is correct
31	Correct	324 ms	57920 KB	Output is correct
32	Correct	171 ms	57976 KB	Output is correct
33	Incorrect	220 ms	61220 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	31 ms	31616 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	30 ms	31608 KB	Output is correct
2	Correct	30 ms	31608 KB	Output is correct
3	Correct	32 ms	31616 KB	Output is correct
4	Correct	33 ms	31676 KB	Output is correct
5	Correct	35 ms	31580 KB	Output is correct
6	Correct	33 ms	31608 KB	Output is correct
7	Correct	31 ms	31700 KB	Output is correct
8	Correct	36 ms	31700 KB	Output is correct
9	Correct	31 ms	31744 KB	Output is correct
10	Correct	36 ms	31680 KB	Output is correct
11	Correct	29 ms	31608 KB	Output is correct
12	Correct	34 ms	31608 KB	Output is correct
13	Correct	31 ms	31608 KB	Output is correct
14	Correct	32 ms	31664 KB	Output is correct
15	Correct	32 ms	31740 KB	Output is correct
16	Correct	32 ms	31744 KB	Output is correct
17	Correct	32 ms	31608 KB	Output is correct
18	Correct	31 ms	31644 KB	Output is correct
19	Correct	33 ms	31744 KB	Output is correct
20	Correct	37 ms	31864 KB	Output is correct
21	Correct	33 ms	31736 KB	Output is correct
22	Correct	30 ms	31744 KB	Output is correct
23	Correct	32 ms	31744 KB	Output is correct
24	Correct	36 ms	31732 KB	Output is correct
25	Correct	32 ms	31608 KB	Output is correct
26	Correct	34 ms	31736 KB	Output is correct
27	Correct	32 ms	31608 KB	Output is correct
28	Correct	33 ms	31608 KB	Output is correct
29	Correct	31 ms	31608 KB	Output is correct
30	Correct	345 ms	58056 KB	Output is correct
31	Correct	324 ms	57920 KB	Output is correct
32	Correct	171 ms	57976 KB	Output is correct
33	Incorrect	220 ms	61220 KB	3rd lines differ - on the 1st token, expected: '2121672', found: '2121820'
34	Halted	0 ms	0 KB	-