oj.uz

답안 #782482

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
782482 2023-07-14T02:59:35 Z GusterGoose27 고대 책들 (IOI17_books) C++17
50 / 100
 109 ms 27588 KB 
#include "books.h"

#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e6+5;

typedef long long ll;
typedef pair<int, int> pii;
bool vis[MAXN];
int uf[MAXN];
pii range[MAXN];
// vector<int> in_comp[MAXN];
int par[MAXN];
// int dist[MAXN];

int n;

int _abs(int v) {
	return v < 0 ? -v : v;
}

int find(int i) {
	return uf[i] == i ? i : uf[i] = find(uf[i]);
}

void merge(int i, int j) {
	i = find(i);
	j = find(j);
	// if (i == j) return;
	assert(i != j);
	uf[i] = j;
	range[i].first = min(range[i].first, range[j].first);
	range[i].second = max(range[i].second, range[j].second);
}

ll minimum_walk(vector<int> p, int s) {
	ll ans = 0;
	n = p.size();
	for (int i = 0; i < n; i++) ans += _abs(p[i]-i);
	if (ans == 0) return 0;
	vector<pii> intervals;
	for (int i = 0; i < n; i++) {
		if (vis[i]) continue;
		int cur = i;
		int l = i, r = i;
		do {
			l = min(l, cur);
			r = max(r, cur);
			uf[cur] = i;
			// in_comp[i].push_back(cur);
			vis[cur] = 1;
			cur = p[cur];
		} while (cur != i);
		if (r > l || i == s) intervals.push_back(pii(l, r));
		range[i] = pii(l, r);
	}
	sort(intervals.begin(), intervals.end()); // they are probably already sorted
	// fill(dist, dist+n, MAXN);
	int curr = intervals[0].second;
	vector<int> stck;
	for (int i = 0; i < intervals.size(); i++) {
		while (!stck.empty() && stck.back() < intervals[i].first) {
			int v = stck.back(); stck.pop_back();
			if (stck.empty()) par[find(v)] = -1;
			else par[find(v)] = find(stck.back());
		}
		while (!stck.empty() && stck.back() < intervals[i].second) {
			int v = stck.back(); stck.pop_back();
			merge(v, intervals[i].second);
		}
		stck.push_back(intervals[i].second);
		// assert(curr != intervals[i].first);
		if (curr > intervals[i].first) {
			curr = max(curr, intervals[i].second);
			continue;
		}
		ans += 2*(intervals[i].first-curr);
		curr = intervals[i].second;
	}
	for (int i = 1; i < stck.size(); i++) par[find(stck[i])] = find(stck[i-1]);
	par[find(stck[0])] = -1;
	// return 0;
	int dist = 0;
	s = find(s);
	while (par[s] != -1) {
		int nxt = find(par[s]);
		dist += min(range[nxt].second-range[s].second, range[s].first-range[nxt].first);
		s = nxt;
	}
	return ans+2*dist;
}

Compilation message

books.cpp: In function 'll minimum_walk(std::vector<int>, int)':
books.cpp:63:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |  for (int i = 0; i < intervals.size(); i++) {
      |                  ~~^~~~~~~~~~~~~~~~~~
books.cpp:82:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |  for (int i = 1; i < stck.size(); i++) par[find(stck[i])] = find(stck[i-1]);
      |                  ~~^~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 308 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 308 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 312 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct

Subtask #3
28.0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 308 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 312 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 109 ms 13752 KB Output is correct
31 Correct 104 ms 13800 KB Output is correct
32 Correct 78 ms 8896 KB Output is correct
33 Correct 91 ms 27116 KB Output is correct
34 Correct 95 ms 27108 KB Output is correct
35 Correct 105 ms 27244 KB Output is correct
36 Correct 109 ms 26840 KB Output is correct
37 Correct 89 ms 25828 KB Output is correct
38 Correct 87 ms 22320 KB Output is correct
39 Correct 96 ms 21272 KB Output is correct
40 Correct 86 ms 15824 KB Output is correct
41 Correct 95 ms 13972 KB Output is correct
42 Correct 101 ms 14316 KB Output is correct
43 Correct 106 ms 27588 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3594'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 312 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 308 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 312 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 109 ms 13752 KB Output is correct
31 Correct 104 ms 13800 KB Output is correct
32 Correct 78 ms 8896 KB Output is correct
33 Correct 91 ms 27116 KB Output is correct
34 Correct 95 ms 27108 KB Output is correct
35 Correct 105 ms 27244 KB Output is correct
36 Correct 109 ms 26840 KB Output is correct
37 Correct 89 ms 25828 KB Output is correct
38 Correct 87 ms 22320 KB Output is correct
39 Correct 96 ms 21272 KB Output is correct
40 Correct 86 ms 15824 KB Output is correct
41 Correct 95 ms 13972 KB Output is correct
42 Correct 101 ms 14316 KB Output is correct
43 Correct 106 ms 27588 KB Output is correct
44 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3594'
45 Halted 0 ms 0 KB -