Submission #69262

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
69262	2018-08-20T10:38:49 Z	Bruteforceman	Ancient Books (IOI17_books)	C++11	22 / 100	2000 ms	15296 KB

books

#include "books.h"
#include "bits/stdc++.h"
using namespace std;

long long minimum_walk(std::vector<int> p, int s) {
	bool good = true;
	for(int i = 0; i < p.size(); i++) {
		if(p[i] != i) {
			good = false;
		}
	}
	if(good) return 0;
	int l = 0;
	int r = p.size() - 1;
	long long ans = 0;
	while(l < p.size() && p[l] == l) {
		if(s == l) {
			ans += 2;
			++s;
		}
		++l;
	}
	while(r >= 0 && p[r] == r) {
		if(s == r) {
			ans += 2;
			--s;
		}
		--r;
	}
	for(int i = l; i < r; i++) {
		int go_left = 0;
		int go_right = 0;
		for(int j = l; j <= i; j++) {
			if(p[j] > i) {
				++go_left;
			}
		}
		for(int j = i + 1; j <= r; j++) {
			if(p[j] < i+1) {
				++go_right;
			}
		}
		assert(go_left == go_right);
		ans += max(2, go_left + go_right);
	}
	return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:7:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < p.size(); i++) {
                 ~~^~~~~~~~~~
books.cpp:16:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(l < p.size() && p[l] == l) {
        ~~^~~~~~~~~~

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	3 ms	392 KB	Output is correct
5	Correct	3 ms	468 KB	Output is correct
6	Correct	2 ms	488 KB	Output is correct
7	Correct	2 ms	488 KB	Output is correct
8	Correct	2 ms	524 KB	Output is correct
9	Correct	3 ms	524 KB	Output is correct
10	Correct	2 ms	524 KB	Output is correct
11	Correct	2 ms	536 KB	Output is correct
12	Correct	3 ms	536 KB	Output is correct
13	Correct	2 ms	536 KB	Output is correct
14	Correct	2 ms	536 KB	Output is correct
15	Correct	3 ms	536 KB	Output is correct
16	Correct	2 ms	536 KB	Output is correct
17	Correct	2 ms	536 KB	Output is correct
18	Correct	3 ms	536 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	3 ms	392 KB	Output is correct
5	Correct	3 ms	468 KB	Output is correct
6	Correct	2 ms	488 KB	Output is correct
7	Correct	2 ms	488 KB	Output is correct
8	Correct	2 ms	524 KB	Output is correct
9	Correct	3 ms	524 KB	Output is correct
10	Correct	2 ms	524 KB	Output is correct
11	Correct	2 ms	536 KB	Output is correct
12	Correct	3 ms	536 KB	Output is correct
13	Correct	2 ms	536 KB	Output is correct
14	Correct	2 ms	536 KB	Output is correct
15	Correct	3 ms	536 KB	Output is correct
16	Correct	2 ms	536 KB	Output is correct
17	Correct	2 ms	536 KB	Output is correct
18	Correct	3 ms	536 KB	Output is correct
19	Correct	4 ms	536 KB	Output is correct
20	Correct	3 ms	536 KB	Output is correct
21	Correct	3 ms	536 KB	Output is correct
22	Correct	3 ms	592 KB	Output is correct
23	Correct	4 ms	620 KB	Output is correct
24	Correct	3 ms	760 KB	Output is correct
25	Correct	4 ms	760 KB	Output is correct
26	Correct	4 ms	820 KB	Output is correct
27	Correct	4 ms	820 KB	Output is correct
28	Correct	5 ms	820 KB	Output is correct
29	Correct	3 ms	820 KB	Output is correct

Subtask #3
0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	3 ms	392 KB	Output is correct
5	Correct	3 ms	468 KB	Output is correct
6	Correct	2 ms	488 KB	Output is correct
7	Correct	2 ms	488 KB	Output is correct
8	Correct	2 ms	524 KB	Output is correct
9	Correct	3 ms	524 KB	Output is correct
10	Correct	2 ms	524 KB	Output is correct
11	Correct	2 ms	536 KB	Output is correct
12	Correct	3 ms	536 KB	Output is correct
13	Correct	2 ms	536 KB	Output is correct
14	Correct	2 ms	536 KB	Output is correct
15	Correct	3 ms	536 KB	Output is correct
16	Correct	2 ms	536 KB	Output is correct
17	Correct	2 ms	536 KB	Output is correct
18	Correct	3 ms	536 KB	Output is correct
19	Correct	4 ms	536 KB	Output is correct
20	Correct	3 ms	536 KB	Output is correct
21	Correct	3 ms	536 KB	Output is correct
22	Correct	3 ms	592 KB	Output is correct
23	Correct	4 ms	620 KB	Output is correct
24	Correct	3 ms	760 KB	Output is correct
25	Correct	4 ms	760 KB	Output is correct
26	Correct	4 ms	820 KB	Output is correct
27	Correct	4 ms	820 KB	Output is correct
28	Correct	5 ms	820 KB	Output is correct
29	Correct	3 ms	820 KB	Output is correct
30	Execution timed out	2067 ms	15296 KB	Time limit exceeded
31	Halted	0 ms	0 KB	-

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	4 ms	15296 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	248 KB	Output is correct
2	Correct	2 ms	356 KB	Output is correct
3	Correct	2 ms	392 KB	Output is correct
4	Correct	3 ms	392 KB	Output is correct
5	Correct	3 ms	468 KB	Output is correct
6	Correct	2 ms	488 KB	Output is correct
7	Correct	2 ms	488 KB	Output is correct
8	Correct	2 ms	524 KB	Output is correct
9	Correct	3 ms	524 KB	Output is correct
10	Correct	2 ms	524 KB	Output is correct
11	Correct	2 ms	536 KB	Output is correct
12	Correct	3 ms	536 KB	Output is correct
13	Correct	2 ms	536 KB	Output is correct
14	Correct	2 ms	536 KB	Output is correct
15	Correct	3 ms	536 KB	Output is correct
16	Correct	2 ms	536 KB	Output is correct
17	Correct	2 ms	536 KB	Output is correct
18	Correct	3 ms	536 KB	Output is correct
19	Correct	4 ms	536 KB	Output is correct
20	Correct	3 ms	536 KB	Output is correct
21	Correct	3 ms	536 KB	Output is correct
22	Correct	3 ms	592 KB	Output is correct
23	Correct	4 ms	620 KB	Output is correct
24	Correct	3 ms	760 KB	Output is correct
25	Correct	4 ms	760 KB	Output is correct
26	Correct	4 ms	820 KB	Output is correct
27	Correct	4 ms	820 KB	Output is correct
28	Correct	5 ms	820 KB	Output is correct
29	Correct	3 ms	820 KB	Output is correct
30	Execution timed out	2067 ms	15296 KB	Time limit exceeded
31	Halted	0 ms	0 KB	-

Submission #69262

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 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
0 / 28.0

Subtask #4
0 / 20.0

Subtask #5
0 / 30.0