Submission #122970

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
122970	2019-06-29T18:10:56 Z	someone_aa	Ancient Books (IOI17_books)	C++17	50 / 100	845 ms	31600 KB

books

#include "books.h"
#include <bits/stdc++.h>
#define ll long long 
#define pb push_back
#define mp make_pair
using namespace std;
const int maxn = 1000100;
bool suffix[maxn];
int n, loc[maxn];

long long minimum_walk(std::vector<int> p, int s) {
	n = p.size();
	suffix[n] = true;
	for(int i=n-1;i>=0;i--) {
		suffix[i] = suffix[i+1] && (p[i] == i);
		loc[p[i]] = i;
	}

	ll result = 0LL;
	set<int>need;
	for(int i=0;i<n;i++) {
		if(suffix[i+1]) break;

		// if p[i] is in need

		if(need.find(p[i]) != need.end()) need.erase(p[i]);
		if(loc[i] > i) need.insert(i);

		/*cout<<"i: \n";
		for(int i:need) {
			cout<<i<<" ";
		} cout<<"\n";*/

		result += 2LL * max(1, int(need.size()));
	}

	return result;
}

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	3 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	3 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	702 ms	24836 KB	Output is correct
31	Correct	845 ms	31600 KB	Output is correct
32	Correct	143 ms	19704 KB	Output is correct
33	Correct	171 ms	19756 KB	Output is correct
34	Correct	170 ms	19832 KB	Output is correct
35	Correct	172 ms	19880 KB	Output is correct
36	Correct	195 ms	19804 KB	Output is correct
37	Correct	256 ms	19832 KB	Output is correct
38	Correct	291 ms	19832 KB	Output is correct
39	Correct	297 ms	19960 KB	Output is correct
40	Correct	367 ms	20408 KB	Output is correct
41	Correct	531 ms	25848 KB	Output is correct
42	Correct	501 ms	24568 KB	Output is correct
43	Correct	189 ms	19832 KB	Output is correct

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	2 ms	376 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	2 ms	256 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 ms	256 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	3 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	702 ms	24836 KB	Output is correct
31	Correct	845 ms	31600 KB	Output is correct
32	Correct	143 ms	19704 KB	Output is correct
33	Correct	171 ms	19756 KB	Output is correct
34	Correct	170 ms	19832 KB	Output is correct
35	Correct	172 ms	19880 KB	Output is correct
36	Correct	195 ms	19804 KB	Output is correct
37	Correct	256 ms	19832 KB	Output is correct
38	Correct	291 ms	19832 KB	Output is correct
39	Correct	297 ms	19960 KB	Output is correct
40	Correct	367 ms	20408 KB	Output is correct
41	Correct	531 ms	25848 KB	Output is correct
42	Correct	501 ms	24568 KB	Output is correct
43	Correct	189 ms	19832 KB	Output is correct
44	Incorrect	2 ms	376 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45	Halted	0 ms	0 KB	-

Submission #122970

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