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Submission #559689

# Submission time Handle Problem Language Result Execution time Memory
559689 2022-05-10T12:02:20 Z nonsensenonsense1 Ancient Books (IOI17_books) C++17
50 / 100
 113 ms 15840 KB 
#include "books.h"
#include <cassert>
#include <cstdlib>

const int N = 1000000;
int n;
bool u[N];

long long minimum_walk(std::vector<int> p, int s) {
	long long ans = 0;
	n = (int)p.size();
	int mx = -1, come = ~(1 << 31);
	for (int i = 0; i < n; ++i) if (p[i] != i) {
		come = std::min(come, abs(i - s));
		if (!u[i]) {
			if (i > mx && mx != -1) {
				if (s > mx && s < i) come = 0;
				ans += i - mx << 1;
			}
			int cur = i;
			do {
				ans += abs(cur - p[cur]);
				mx = std::max(mx, cur);
				u[cur] = 1;
				cur = p[cur];
			} while (cur != i);
		}
	}
	if (mx == -1) return 0;
	return ans + come * 2;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:18:14: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   18 |     ans += i - mx << 1;
      |            ~~^~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 288 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 288 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 288 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 288 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 288 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 288 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 288 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 292 KB Output is correct
29 Correct 0 ms 212 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 288 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 288 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 288 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 288 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 292 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 112 ms 15708 KB Output is correct
31 Correct 113 ms 15840 KB Output is correct
32 Correct 96 ms 14824 KB Output is correct
33 Correct 93 ms 15716 KB Output is correct
34 Correct 93 ms 15704 KB Output is correct
35 Correct 100 ms 15708 KB Output is correct
36 Correct 99 ms 15708 KB Output is correct
37 Correct 95 ms 15704 KB Output is correct
38 Correct 94 ms 15716 KB Output is correct
39 Correct 102 ms 15836 KB Output is correct
40 Correct 96 ms 15716 KB Output is correct
41 Correct 111 ms 15820 KB Output is correct
42 Correct 106 ms 15708 KB Output is correct
43 Correct 100 ms 15784 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 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 0 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 288 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 288 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 288 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 288 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 292 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 112 ms 15708 KB Output is correct
31 Correct 113 ms 15840 KB Output is correct
32 Correct 96 ms 14824 KB Output is correct
33 Correct 93 ms 15716 KB Output is correct
34 Correct 93 ms 15704 KB Output is correct
35 Correct 100 ms 15708 KB Output is correct
36 Correct 99 ms 15708 KB Output is correct
37 Correct 95 ms 15704 KB Output is correct
38 Correct 94 ms 15716 KB Output is correct
39 Correct 102 ms 15836 KB Output is correct
40 Correct 96 ms 15716 KB Output is correct
41 Correct 111 ms 15820 KB Output is correct
42 Correct 106 ms 15708 KB Output is correct
43 Correct 100 ms 15784 KB Output is correct
44 Incorrect 0 ms 212 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -