Submission #941508

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
941508	2024-03-09T03:07:46 Z	beaboss	Ancient Books (IOI17_books)	C++14	50 / 100	114 ms	16984 KB

books

// Source: https://oj.uz/problem/view/IOI17_books
// 
#include "books.h"
#include "bits/stdc++.h"

using namespace std;

#define s second
#define f first
#define pb push_back

typedef long long ll;

typedef pair<int, int> pii;
typedef vector<pii> vpii;

typedef vector<int> vi;

#define FOR(i, a, b) for (int i = (a); i<b; i++)

bool ckmin(int& a, int b){ return b < a ? a = b, true : false; }

bool ckmax(int& a, int b){ return b > a ? a = b, true : false; }

const int N = 1e6 + 10;
int ri[N], le[N];
bool vis[N];

ll minimum_walk(vector<int> p, int s) {
	// if (s == 0) {
	ll ans = 0;
	int n = p.size();
	FOR(i, 0, n) {
		// cout << i << endl;
		if (!vis[i]) {
			int l, r;
			r = l = i;
			int cur = p[i];
			while (cur != i) {
				l = min(l, cur);r=max(r, cur);
				cur=p[cur];
			}
			cur = i;
			do {

				ans += abs(p[cur]-cur);
				le[cur] = l;
				ri[cur] = r;
				vis[cur]=true;
				cur=p[cur];
			} while (cur != i);
		}
	}

	int en = n-1;
	while (en != -1 && p[en] == en) en--;
	int st = 0;
	while (st != n && p[st] == st) st++;

	if (st > en) return 0;
	// cout << 'd' << endl;
	// cout << ans << 
	ans += 2 * (max(st - s, 0) + max(s - en, 0));
	s = min(max(s, st), en);
	int l = s, r = s;
	// cout << ans << endl;
	while (l > st || r < en) {
		// cout << l << r << endl;
		int tr = r;
		int hr = ri[tr];
		int tl = le[tr];
		int cr = 0;
		while (tr < en && (tl >= l || tr != hr)) {
			// cout << tl << tr << endl;
			if (tr == hr) cr+=2;
			tr++;
			tl=min(tl,le[tr]);
			hr = max(hr, ri[tr]);
		}

		int right = tr;

		// if (tl >= s) ans += cr; // didn't get through

		tl = l;
		int hl = le[tl];
		tr = ri[tl];
		int cl = 0;
		// cout << hl << tl << endl;
		while (tl > st && (tr <= r || tl != hl)) {
			// cout << hl << tl << endl;
			if (tl == hl) cl+=2;
			tl--;
			tr=max(tr, ri[tl]);
			hl = min(hl, le[tl]);
		}

		int left = tl;
		// if (tr <= s) ans += cl; // didn't get through

		// cout << cl << cr << endl;
		// cout << ans << endl;
		if (tl >= l || tr <= r) ans += cr + cl;
		else ans += min(cl, cr);
		// cout << ans << endl;
		l = left, r = right;
	}
	// cout << ans << endl;

	// int r =0;
	// FOR(i, 0, en+1) {
	// 	if (r < i) {
	// 		r++;
	// 		ans+=2;
	// 	}
	// 	r = max(p[i], r);
	// }
	return ans;
	// } else assert(false);
}



// int main() {
// 	ios::sync_with_stdio(false);
// 	cin.tie(nullptr);

// 	int res = minimum_walk({0, 2, 3, 1, 5, 6, 4}, 4);
// 	cout << res << endl;
// }

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4440 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4440 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4440 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4440 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4440 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4440 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	1 ms	4440 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	3 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4444 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	1 ms	4444 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4440 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4440 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4440 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	1 ms	4440 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	3 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4444 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	1 ms	4444 KB	Output is correct
30	Correct	114 ms	16904 KB	Output is correct
31	Correct	103 ms	16976 KB	Output is correct
32	Correct	84 ms	16892 KB	Output is correct
33	Correct	78 ms	16980 KB	Output is correct
34	Correct	84 ms	16888 KB	Output is correct
35	Correct	81 ms	16980 KB	Output is correct
36	Correct	81 ms	16984 KB	Output is correct
37	Correct	97 ms	16980 KB	Output is correct
38	Correct	83 ms	16888 KB	Output is correct
39	Correct	87 ms	16900 KB	Output is correct
40	Correct	82 ms	16888 KB	Output is correct
41	Correct	98 ms	16900 KB	Output is correct
42	Correct	97 ms	16888 KB	Output is correct
43	Correct	79 ms	16980 KB	Output is correct

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	4440 KB	3rd lines differ - on the 1st token, expected: '3304', found: '3308'
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	4696 KB	Output is correct
2	Correct	1 ms	4444 KB	Output is correct
3	Correct	1 ms	4444 KB	Output is correct
4	Correct	1 ms	4444 KB	Output is correct
5	Correct	1 ms	4440 KB	Output is correct
6	Correct	1 ms	4444 KB	Output is correct
7	Correct	1 ms	4444 KB	Output is correct
8	Correct	1 ms	4444 KB	Output is correct
9	Correct	1 ms	4444 KB	Output is correct
10	Correct	1 ms	4444 KB	Output is correct
11	Correct	1 ms	4444 KB	Output is correct
12	Correct	1 ms	4696 KB	Output is correct
13	Correct	1 ms	4444 KB	Output is correct
14	Correct	1 ms	4444 KB	Output is correct
15	Correct	1 ms	4440 KB	Output is correct
16	Correct	1 ms	4444 KB	Output is correct
17	Correct	1 ms	4440 KB	Output is correct
18	Correct	1 ms	4444 KB	Output is correct
19	Correct	1 ms	4444 KB	Output is correct
20	Correct	1 ms	4444 KB	Output is correct
21	Correct	1 ms	4440 KB	Output is correct
22	Correct	1 ms	4444 KB	Output is correct
23	Correct	3 ms	4444 KB	Output is correct
24	Correct	1 ms	4444 KB	Output is correct
25	Correct	1 ms	4444 KB	Output is correct
26	Correct	1 ms	4444 KB	Output is correct
27	Correct	1 ms	4444 KB	Output is correct
28	Correct	1 ms	4444 KB	Output is correct
29	Correct	1 ms	4444 KB	Output is correct
30	Correct	114 ms	16904 KB	Output is correct
31	Correct	103 ms	16976 KB	Output is correct
32	Correct	84 ms	16892 KB	Output is correct
33	Correct	78 ms	16980 KB	Output is correct
34	Correct	84 ms	16888 KB	Output is correct
35	Correct	81 ms	16980 KB	Output is correct
36	Correct	81 ms	16984 KB	Output is correct
37	Correct	97 ms	16980 KB	Output is correct
38	Correct	83 ms	16888 KB	Output is correct
39	Correct	87 ms	16900 KB	Output is correct
40	Correct	82 ms	16888 KB	Output is correct
41	Correct	98 ms	16900 KB	Output is correct
42	Correct	97 ms	16888 KB	Output is correct
43	Correct	79 ms	16980 KB	Output is correct
44	Incorrect	1 ms	4440 KB	3rd lines differ - on the 1st token, expected: '3304', found: '3308'
45	Halted	0 ms	0 KB	-

Submission #941508

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 28.0 / 28.0

Subtask #4 0 / 20.0

Subtask #5 0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
28.0 / 28.0

Subtask #4
0 / 20.0

Subtask #5
0 / 30.0