oj.uz

Submission #624647

# Submission time Handle Problem Language Result Execution time Memory
624647 2022-08-08T15:01:25 Z 8e7 Ancient Books (IOI17_books) C++17
100 / 100
 175 ms 30200 KB 
//Challenge: Accepted
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
#ifdef zisk
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ...b){cout << a << " ", debug(b...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
#else
#define debug(...) 0
#define pary(...) 0
#endif
#define ll long long
#define maxn 1000005
#define pii pair<int, int>
#define ff first
#define ss second
#include "books.h"

const int inf = 1e9;
pii ran[maxn], color[maxn];
int a[maxn];
bool vis[maxn];
long long minimum_walk(vector<int> p, int s) {
	ll ans = 0;
	int n = p.size();
	{
		int c = 0;
		for (int i = 0;i < n;i++) {
			ans += abs(p[i] - i);
			if (!vis[i]) {
				c++;
				int cur = i;
				int mi = inf, ma = 0;
				do {
					mi = min(mi, cur);
					ma = max(ma, cur);
					a[cur] = c;
					vis[cur] = 1;
					cur = p[cur];
				} while (!vis[cur]);
				color[c] = {mi, ma};
			}
		}
		for (int i = 0;i < n;i++) ran[i] = color[a[i]];
	}

	int lb = 0, rb = n-1;
	while (lb < s && p[lb] == lb) lb++;
	while (rb > s && p[rb] == rb) rb--;
	auto expand = [&] (int l, int r, int nl, int nr, int type) { //0:none, 1:left, 2:right
		if (type == 1) {
			l = max(lb, l-1);
			nl = min(nl, ran[l].ff);	
			nr = max(nr, ran[l].ss);
		} else if(type == 2) {
			r = min(rb, r+1);
			nl = min(nl, ran[r].ff);	
			nr = max(nr, ran[r].ss);
		}
		while (nl < l || nr > r) {
			int tl = nl, tr = nr;
			while (tl < l) {
				l--;	
				nl = min(nl, ran[l].ff);
				nr = max(nr, ran[l].ss);
			}
			while (tr > r) {
				r++;
				nl = min(nl, ran[r].ff);
				nr = max(nr, ran[r].ss);
			}
		}
		return make_pair(l, r);
	};
	pii cur = {s, s};	
	cur = expand(s, s, ran[s].ff, ran[s].ss, 0);	
	while (cur.ff > lb || cur.ss < rb) {
		if (cur.ff == lb) {
			cur = expand(cur.ff, cur.ss, cur.ff, cur.ss, 2);
			ans+=2;
		} else if (cur.ss == rb){
			cur = expand(cur.ff, cur.ss, cur.ff, cur.ss, 1);
			ans+=2;
		} else {
			pii tmp = cur, lef;
			int sl = 0, sr = 0, vl, vr;
			while (tmp.ss <= cur.ss) {
				tmp = expand(tmp.ff, tmp.ss, tmp.ff, tmp.ss, 1);
				sl++;
				if (tmp.ff == lb) break;
			}
			vl = sl;
			if (tmp.ss <= cur.ss) vl = inf;
			lef = tmp;

			tmp = cur;	
			while (tmp.ff >= cur.ff) {
				tmp = expand(tmp.ff, tmp.ss, tmp.ff, tmp.ss, 2);
				sr++;
				if (tmp.ss == rb) break;
			}
			vr = sr;
			if (tmp.ff >= cur.ff) vr = inf;
			if (vl == inf && vr == inf) {
				ans += 2 * (sl + sr);
				break;
			} else if (vl < vr) {
				ans += 2 * vl;
				cur = lef;
			} else {
				ans += 2 * vr;
				cur = tmp;
			}
		}
	}
	return ans;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 308 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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 308 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 340 KB Output is correct
20 Correct 1 ms 304 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 308 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 312 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 308 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 340 KB Output is correct
20 Correct 1 ms 304 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 308 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 312 KB Output is correct
30 Correct 175 ms 22280 KB Output is correct
31 Correct 165 ms 22236 KB Output is correct
32 Correct 102 ms 30084 KB Output is correct
33 Correct 110 ms 27736 KB Output is correct
34 Correct 142 ms 27728 KB Output is correct
35 Correct 111 ms 26652 KB Output is correct
36 Correct 109 ms 24312 KB Output is correct
37 Correct 117 ms 22576 KB Output is correct
38 Correct 104 ms 22388 KB Output is correct
39 Correct 101 ms 22316 KB Output is correct
40 Correct 103 ms 22236 KB Output is correct
41 Correct 119 ms 22280 KB Output is correct
42 Correct 120 ms 22392 KB Output is correct
43 Correct 108 ms 28108 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 304 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 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 0 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 304 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 300 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 312 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 308 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 308 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 340 KB Output is correct
20 Correct 1 ms 304 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 308 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 312 KB Output is correct
30 Correct 175 ms 22280 KB Output is correct
31 Correct 165 ms 22236 KB Output is correct
32 Correct 102 ms 30084 KB Output is correct
33 Correct 110 ms 27736 KB Output is correct
34 Correct 142 ms 27728 KB Output is correct
35 Correct 111 ms 26652 KB Output is correct
36 Correct 109 ms 24312 KB Output is correct
37 Correct 117 ms 22576 KB Output is correct
38 Correct 104 ms 22388 KB Output is correct
39 Correct 101 ms 22316 KB Output is correct
40 Correct 103 ms 22236 KB Output is correct
41 Correct 119 ms 22280 KB Output is correct
42 Correct 120 ms 22392 KB Output is correct
43 Correct 108 ms 28108 KB Output is correct
44 Correct 1 ms 340 KB Output is correct
45 Correct 1 ms 340 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 0 ms 316 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 304 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 0 ms 340 KB Output is correct
59 Correct 0 ms 340 KB Output is correct
60 Correct 1 ms 304 KB Output is correct
61 Correct 1 ms 312 KB Output is correct
62 Correct 1 ms 300 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 102 ms 27980 KB Output is correct
65 Correct 105 ms 28720 KB Output is correct
66 Correct 108 ms 22644 KB Output is correct
67 Correct 96 ms 22428 KB Output is correct
68 Correct 15 ms 3156 KB Output is correct
69 Correct 14 ms 3028 KB Output is correct
70 Correct 10 ms 3156 KB Output is correct
71 Correct 11 ms 3456 KB Output is correct
72 Correct 11 ms 3540 KB Output is correct
73 Correct 11 ms 2864 KB Output is correct
74 Correct 108 ms 27728 KB Output is correct
75 Correct 111 ms 27780 KB Output is correct
76 Correct 96 ms 28008 KB Output is correct
77 Correct 102 ms 28048 KB Output is correct
78 Correct 107 ms 27272 KB Output is correct
79 Correct 117 ms 27308 KB Output is correct
80 Correct 110 ms 30200 KB Output is correct
81 Correct 100 ms 26296 KB Output is correct
82 Correct 109 ms 26236 KB Output is correct
83 Correct 105 ms 25332 KB Output is correct
84 Correct 103 ms 24764 KB Output is correct
85 Correct 103 ms 23488 KB Output is correct
86 Correct 99 ms 22812 KB Output is correct
87 Correct 106 ms 29004 KB Output is correct
88 Correct 104 ms 27768 KB Output is correct
89 Correct 106 ms 25940 KB Output is correct
90 Correct 121 ms 22524 KB Output is correct
91 Correct 118 ms 22372 KB Output is correct
92 Correct 104 ms 22388 KB Output is correct