답안 #105043

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
105043	2019-04-10T09:49:13 Z	bert30702	고대 책들 (IOI17_books)	C++17	12 / 100	41 ms	31872 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;
		while(ptr <= G[i] or (ptr != s and ptr < n and p[ptr] == ptr)) {
			merge(i, ptr);
			ptr ++;
		}
		if(ptr < n) {
			// cout << "E " << i << ' ' << ptr << endl;
			E.push_back({ptr - i, {i, ptr}});
		}
		// cout << i << ' ' << ptr << endl;
		i = ptr - 1;
	}
	sort(E.begin(), E.end());
	for(auto it: E) {
		if(Find(it.S.F) != Find(it.S.S)) {
			// cout << " Add " << it.S.F << ' ' << it.S.S << endl;
			merge(it.S.F, it.S.S);
			sum += 2 * it.F;
		}
	}
	// cout << cnt << ' ' << sz[Find(s)] << endl;
	assert(cnt + sz[Find(s)] >= n);
	return sum;
}

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	31616 KB	Output is correct
2	Correct	30 ms	31616 KB	Output is correct
3	Correct	34 ms	31616 KB	Output is correct
4	Correct	36 ms	31736 KB	Output is correct
5	Correct	33 ms	31580 KB	Output is correct
6	Correct	37 ms	31736 KB	Output is correct
7	Correct	32 ms	31616 KB	Output is correct
8	Correct	32 ms	31736 KB	Output is correct
9	Correct	32 ms	31608 KB	Output is correct
10	Correct	41 ms	31588 KB	Output is correct
11	Correct	34 ms	31608 KB	Output is correct
12	Correct	31 ms	31612 KB	Output is correct
13	Correct	34 ms	31636 KB	Output is correct
14	Correct	33 ms	31608 KB	Output is correct
15	Correct	35 ms	31608 KB	Output is correct
16	Correct	32 ms	31608 KB	Output is correct
17	Correct	33 ms	31872 KB	Output is correct
18	Correct	39 ms	31736 KB	Output is correct

Subtask #2

0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	31616 KB	Output is correct
2	Correct	30 ms	31616 KB	Output is correct
3	Correct	34 ms	31616 KB	Output is correct
4	Correct	36 ms	31736 KB	Output is correct
5	Correct	33 ms	31580 KB	Output is correct
6	Correct	37 ms	31736 KB	Output is correct
7	Correct	32 ms	31616 KB	Output is correct
8	Correct	32 ms	31736 KB	Output is correct
9	Correct	32 ms	31608 KB	Output is correct
10	Correct	41 ms	31588 KB	Output is correct
11	Correct	34 ms	31608 KB	Output is correct
12	Correct	31 ms	31612 KB	Output is correct
13	Correct	34 ms	31636 KB	Output is correct
14	Correct	33 ms	31608 KB	Output is correct
15	Correct	35 ms	31608 KB	Output is correct
16	Correct	32 ms	31608 KB	Output is correct
17	Correct	33 ms	31872 KB	Output is correct
18	Correct	39 ms	31736 KB	Output is correct
19	Correct	31 ms	31716 KB	Output is correct
20	Correct	34 ms	31736 KB	Output is correct
21	Correct	33 ms	31640 KB	Output is correct
22	Incorrect	34 ms	31736 KB	3rd lines differ - on the 1st token, expected: '2082', found: '2320'
23	Halted	0 ms	0 KB	-

Subtask #3

0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	31616 KB	Output is correct
2	Correct	30 ms	31616 KB	Output is correct
3	Correct	34 ms	31616 KB	Output is correct
4	Correct	36 ms	31736 KB	Output is correct
5	Correct	33 ms	31580 KB	Output is correct
6	Correct	37 ms	31736 KB	Output is correct
7	Correct	32 ms	31616 KB	Output is correct
8	Correct	32 ms	31736 KB	Output is correct
9	Correct	32 ms	31608 KB	Output is correct
10	Correct	41 ms	31588 KB	Output is correct
11	Correct	34 ms	31608 KB	Output is correct
12	Correct	31 ms	31612 KB	Output is correct
13	Correct	34 ms	31636 KB	Output is correct
14	Correct	33 ms	31608 KB	Output is correct
15	Correct	35 ms	31608 KB	Output is correct
16	Correct	32 ms	31608 KB	Output is correct
17	Correct	33 ms	31872 KB	Output is correct
18	Correct	39 ms	31736 KB	Output is correct
19	Correct	31 ms	31716 KB	Output is correct
20	Correct	34 ms	31736 KB	Output is correct
21	Correct	33 ms	31640 KB	Output is correct
22	Incorrect	34 ms	31736 KB	3rd lines differ - on the 1st token, expected: '2082', found: '2320'
23	Halted	0 ms	0 KB	-

Subtask #4

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Incorrect	34 ms	31720 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	31616 KB	Output is correct
2	Correct	30 ms	31616 KB	Output is correct
3	Correct	34 ms	31616 KB	Output is correct
4	Correct	36 ms	31736 KB	Output is correct
5	Correct	33 ms	31580 KB	Output is correct
6	Correct	37 ms	31736 KB	Output is correct
7	Correct	32 ms	31616 KB	Output is correct
8	Correct	32 ms	31736 KB	Output is correct
9	Correct	32 ms	31608 KB	Output is correct
10	Correct	41 ms	31588 KB	Output is correct
11	Correct	34 ms	31608 KB	Output is correct
12	Correct	31 ms	31612 KB	Output is correct
13	Correct	34 ms	31636 KB	Output is correct
14	Correct	33 ms	31608 KB	Output is correct
15	Correct	35 ms	31608 KB	Output is correct
16	Correct	32 ms	31608 KB	Output is correct
17	Correct	33 ms	31872 KB	Output is correct
18	Correct	39 ms	31736 KB	Output is correct
19	Correct	31 ms	31716 KB	Output is correct
20	Correct	34 ms	31736 KB	Output is correct
21	Correct	33 ms	31640 KB	Output is correct
22	Incorrect	34 ms	31736 KB	3rd lines differ - on the 1st token, expected: '2082', found: '2320'
23	Halted	0 ms	0 KB	-