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Submission #40284

# Submission time Handle Problem Language Result Execution time Memory
40284 2018-01-30T15:40:22 Z jackyliuxx Ancient Books (IOI17_books) C++14
50 / 100
 277 ms 17652 KB 
#include "books.h"
#include <bits/stdc++.h>
using namespace std;

long long minimum_walk(std::vector<int> p, int s) {
    long long ans = 0;
    int n = p.size();
    vector<int> group(n);
    for (int i = 0; i < n; i++) {
        group[i] = i;
    }
    for (int i = 0; i < n; i++) {
        if (group[i] == i) {
            int x = i;
            while (p[x] != i) {
                ans += abs(p[x] - x);
                x = p[x];
                group[x] = i;
            }
            ans += abs(p[x] - x);
        }
    }
    vector<int> end(n, -1);
    for (int i = 0; i < n; i++) {
        end[group[i]] = max(end[group[i]], i);
    }
    int min_group = 0;
    for (int i = 0; i < n; i++) {
        if (min_group == -1) {
            ans += 2;
            min_group = i;
        } else {
            end[min_group] = max(end[min_group], end[group[i]]);
            group[i] = min_group;
        }
        if (i == end[min_group]) {
            min_group = -1;
        }
    }
    for (int i = 0; i < s && p[i] == i; i++) {
        ans -= 2;
    }
    for (int i = n - 1; i > s && p[i] == i; i--) {
        ans -= 2;
    }
	return ans;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2020 KB Output is correct
2 Correct 0 ms 2020 KB Output is correct
3 Correct 0 ms 2020 KB Output is correct
4 Correct 0 ms 2020 KB Output is correct
5 Correct 0 ms 2020 KB Output is correct
6 Correct 0 ms 2020 KB Output is correct
7 Correct 0 ms 2020 KB Output is correct
8 Correct 0 ms 2020 KB Output is correct
9 Correct 0 ms 2020 KB Output is correct
10 Correct 0 ms 2020 KB Output is correct
11 Correct 0 ms 2020 KB Output is correct
12 Correct 0 ms 2020 KB Output is correct
13 Correct 0 ms 2020 KB Output is correct
14 Correct 0 ms 2020 KB Output is correct
15 Correct 0 ms 2020 KB Output is correct
16 Correct 0 ms 2020 KB Output is correct
17 Correct 0 ms 2020 KB Output is correct
18 Correct 0 ms 2020 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2020 KB Output is correct
2 Correct 0 ms 2020 KB Output is correct
3 Correct 0 ms 2020 KB Output is correct
4 Correct 0 ms 2020 KB Output is correct
5 Correct 0 ms 2020 KB Output is correct
6 Correct 0 ms 2020 KB Output is correct
7 Correct 0 ms 2020 KB Output is correct
8 Correct 0 ms 2020 KB Output is correct
9 Correct 0 ms 2020 KB Output is correct
10 Correct 0 ms 2020 KB Output is correct
11 Correct 0 ms 2020 KB Output is correct
12 Correct 0 ms 2020 KB Output is correct
13 Correct 0 ms 2020 KB Output is correct
14 Correct 0 ms 2020 KB Output is correct
15 Correct 0 ms 2020 KB Output is correct
16 Correct 0 ms 2020 KB Output is correct
17 Correct 0 ms 2020 KB Output is correct
18 Correct 0 ms 2020 KB Output is correct
19 Correct 0 ms 2020 KB Output is correct
20 Correct 0 ms 2020 KB Output is correct
21 Correct 0 ms 2020 KB Output is correct
22 Correct 0 ms 2020 KB Output is correct
23 Correct 0 ms 2020 KB Output is correct
24 Correct 0 ms 2020 KB Output is correct
25 Correct 0 ms 2020 KB Output is correct
26 Correct 0 ms 2020 KB Output is correct
27 Correct 0 ms 2020 KB Output is correct
28 Correct 0 ms 2020 KB Output is correct
29 Correct 0 ms 2020 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2020 KB Output is correct
2 Correct 0 ms 2020 KB Output is correct
3 Correct 0 ms 2020 KB Output is correct
4 Correct 0 ms 2020 KB Output is correct
5 Correct 0 ms 2020 KB Output is correct
6 Correct 0 ms 2020 KB Output is correct
7 Correct 0 ms 2020 KB Output is correct
8 Correct 0 ms 2020 KB Output is correct
9 Correct 0 ms 2020 KB Output is correct
10 Correct 0 ms 2020 KB Output is correct
11 Correct 0 ms 2020 KB Output is correct
12 Correct 0 ms 2020 KB Output is correct
13 Correct 0 ms 2020 KB Output is correct
14 Correct 0 ms 2020 KB Output is correct
15 Correct 0 ms 2020 KB Output is correct
16 Correct 0 ms 2020 KB Output is correct
17 Correct 0 ms 2020 KB Output is correct
18 Correct 0 ms 2020 KB Output is correct
19 Correct 0 ms 2020 KB Output is correct
20 Correct 0 ms 2020 KB Output is correct
21 Correct 0 ms 2020 KB Output is correct
22 Correct 0 ms 2020 KB Output is correct
23 Correct 0 ms 2020 KB Output is correct
24 Correct 0 ms 2020 KB Output is correct
25 Correct 0 ms 2020 KB Output is correct
26 Correct 0 ms 2020 KB Output is correct
27 Correct 0 ms 2020 KB Output is correct
28 Correct 0 ms 2020 KB Output is correct
29 Correct 0 ms 2020 KB Output is correct
30 Correct 274 ms 17652 KB Output is correct
31 Correct 277 ms 17652 KB Output is correct
32 Correct 148 ms 17652 KB Output is correct
33 Correct 178 ms 17652 KB Output is correct
34 Correct 150 ms 17652 KB Output is correct
35 Correct 163 ms 17652 KB Output is correct
36 Correct 175 ms 17652 KB Output is correct
37 Correct 157 ms 17652 KB Output is correct
38 Correct 160 ms 17652 KB Output is correct
39 Correct 179 ms 17652 KB Output is correct
40 Correct 192 ms 17652 KB Output is correct
41 Correct 205 ms 17652 KB Output is correct
42 Correct 202 ms 17652 KB Output is correct
43 Correct 173 ms 17652 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 2020 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 2020 KB Output is correct
2 Correct 0 ms 2020 KB Output is correct
3 Correct 0 ms 2020 KB Output is correct
4 Correct 0 ms 2020 KB Output is correct
5 Correct 0 ms 2020 KB Output is correct
6 Correct 0 ms 2020 KB Output is correct
7 Correct 0 ms 2020 KB Output is correct
8 Correct 0 ms 2020 KB Output is correct
9 Correct 0 ms 2020 KB Output is correct
10 Correct 0 ms 2020 KB Output is correct
11 Correct 0 ms 2020 KB Output is correct
12 Correct 0 ms 2020 KB Output is correct
13 Correct 0 ms 2020 KB Output is correct
14 Correct 0 ms 2020 KB Output is correct
15 Correct 0 ms 2020 KB Output is correct
16 Correct 0 ms 2020 KB Output is correct
17 Correct 0 ms 2020 KB Output is correct
18 Correct 0 ms 2020 KB Output is correct
19 Correct 0 ms 2020 KB Output is correct
20 Correct 0 ms 2020 KB Output is correct
21 Correct 0 ms 2020 KB Output is correct
22 Correct 0 ms 2020 KB Output is correct
23 Correct 0 ms 2020 KB Output is correct
24 Correct 0 ms 2020 KB Output is correct
25 Correct 0 ms 2020 KB Output is correct
26 Correct 0 ms 2020 KB Output is correct
27 Correct 0 ms 2020 KB Output is correct
28 Correct 0 ms 2020 KB Output is correct
29 Correct 0 ms 2020 KB Output is correct
30 Correct 274 ms 17652 KB Output is correct
31 Correct 277 ms 17652 KB Output is correct
32 Correct 148 ms 17652 KB Output is correct
33 Correct 178 ms 17652 KB Output is correct
34 Correct 150 ms 17652 KB Output is correct
35 Correct 163 ms 17652 KB Output is correct
36 Correct 175 ms 17652 KB Output is correct
37 Correct 157 ms 17652 KB Output is correct
38 Correct 160 ms 17652 KB Output is correct
39 Correct 179 ms 17652 KB Output is correct
40 Correct 192 ms 17652 KB Output is correct
41 Correct 205 ms 17652 KB Output is correct
42 Correct 202 ms 17652 KB Output is correct
43 Correct 173 ms 17652 KB Output is correct
44 Incorrect 0 ms 2020 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -