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Submission #921327

# Submission time Handle Problem Language Result Execution time Memory
921327 2024-02-03T17:28:40 Z salmon Ancient Books (IOI17_books) C++14
100 / 100
 127 ms 27924 KB 
#include <bits/stdc++.h>
using namespace std;

int parent[1100100];
int v[1100100];
bool done[1100100];
int l[1100100];
int r[1100100];

pair<int,int> expand_range(int l2, int r2, int h){
    int l1 = min(l2,h);
    int r1 = max(r2,h);

    while(l1 != l2 || r1 != r2){
        if(l1 != l2){
            l2--;
            l1 = min(l1,l[parent[l2]]);
            r1 = max(r1,r[parent[l2]]);
        }
        else{
            r2++;
            l1 = min(l1,l[parent[r2]]);
            r1 = max(r1,r[parent[r2]]);
        }
    }

    return {l2,r2};
}

long long minimum_walk(vector<int> p, int s) {
    int l1 = s;
    int r1 = s;
    int l2 = s;
    int r2 = s;
    long long int some = 0;

    int N = p.size();

    for(int i = 0; i < N; i++){
        done[i] = false;
    }

    for(int i = 0; i < N; i++){
        if(done[i]) continue;

        l[i] = i;
        r[i] = i;
        parent[i] = i;
        int j = p[i];
        some += abs(i - j);
        while(j != i){
            int temp = j;
            parent[j] = i;
            done[j] = true;
            r[i] = max(r[i],j);
            j = p[j];
            some += abs(temp - j);
        }
    }

    l2 = l[parent[s]];
    r2 = r[parent[s]];

    while(l1 != l2 || r1 != r2){
        if(l1 != l2){
            l1--;
            l2 = min(l2,l[parent[l1]]);
            r2 = max(r2,r[parent[l1]]);
        }
        else{
            r1++;
            l2 = min(l2,l[parent[r1]]);
            r2 = max(r2,r[parent[r1]]);
        }
    }

    int l3l = l1;
    int r3l = r1;

    int l3r = l1;
    int r3r = r1;

    while(l1 != 0 || r1 != N - 1){
        l3l = l1;
        r3l = r1;

        l3r = l1;
        r3r = r1;

        int tcoft = 0;
        int coft = 0;

        while(!(r1 < r3l || l3r < l1)){
            coft += 2;
            tcoft += 2;

            if(l3l > 0){
                pair<int,int> ii = expand_range(l3l,r3l,l3l - 1);
                l3l = ii.first;
                r3l = ii.second;
            }
            else{
                tcoft -= 2;
            }

            if(r3r < N - 1){
                pair<int,int> ii = expand_range(l3r,r3r,r3r+1);
                l3r = ii.first;
                r3r = ii.second;
            }
            else{
                tcoft -=2;
            }

            if(!(r1 < r3l || l3r < l1) && l3l == 0 && r3r == N - 1){
                some += tcoft;
                break;
            }
        }

        some += coft;
        l1 = min(l3l,l1);
        l1 = min(l3r,l1);


        r1 = max(r3l,r1);
        r1 = max(r3r,r1);
    }
    //printf("%d",some);

    for(int i = N - 1; i > s; i--){
        if(p[i] != i) break;
        some -= 2;
    }

    for(int i = 0; i < s; i++){
        if(p[i] != i) break;
        some -= 2;
    }

    return some;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6596 KB Output is correct
4 Correct 1 ms 6500 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6744 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6584 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6592 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6596 KB Output is correct
4 Correct 1 ms 6500 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6744 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6584 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6592 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6588 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6588 KB Output is correct
28 Correct 1 ms 6588 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6596 KB Output is correct
4 Correct 1 ms 6500 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6744 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6584 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6592 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6588 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6588 KB Output is correct
28 Correct 1 ms 6588 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 95 ms 23288 KB Output is correct
31 Correct 91 ms 21240 KB Output is correct
32 Correct 80 ms 27472 KB Output is correct
33 Correct 84 ms 27472 KB Output is correct
34 Correct 93 ms 27640 KB Output is correct
35 Correct 99 ms 27620 KB Output is correct
36 Correct 81 ms 27476 KB Output is correct
37 Correct 83 ms 27624 KB Output is correct
38 Correct 79 ms 27600 KB Output is correct
39 Correct 79 ms 27640 KB Output is correct
40 Correct 90 ms 27472 KB Output is correct
41 Correct 91 ms 27472 KB Output is correct
42 Correct 91 ms 27456 KB Output is correct
43 Correct 110 ms 27472 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6600 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6588 KB Output is correct
7 Correct 1 ms 6584 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6596 KB Output is correct
4 Correct 1 ms 6500 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6744 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6584 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6488 KB Output is correct
16 Correct 1 ms 6592 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6588 KB Output is correct
24 Correct 1 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6588 KB Output is correct
28 Correct 1 ms 6588 KB Output is correct
29 Correct 1 ms 6492 KB Output is correct
30 Correct 95 ms 23288 KB Output is correct
31 Correct 91 ms 21240 KB Output is correct
32 Correct 80 ms 27472 KB Output is correct
33 Correct 84 ms 27472 KB Output is correct
34 Correct 93 ms 27640 KB Output is correct
35 Correct 99 ms 27620 KB Output is correct
36 Correct 81 ms 27476 KB Output is correct
37 Correct 83 ms 27624 KB Output is correct
38 Correct 79 ms 27600 KB Output is correct
39 Correct 79 ms 27640 KB Output is correct
40 Correct 90 ms 27472 KB Output is correct
41 Correct 91 ms 27472 KB Output is correct
42 Correct 91 ms 27456 KB Output is correct
43 Correct 110 ms 27472 KB Output is correct
44 Correct 1 ms 6492 KB Output is correct
45 Correct 1 ms 6600 KB Output is correct
46 Correct 1 ms 6492 KB Output is correct
47 Correct 1 ms 6492 KB Output is correct
48 Correct 1 ms 6492 KB Output is correct
49 Correct 1 ms 6588 KB Output is correct
50 Correct 1 ms 6584 KB Output is correct
51 Correct 1 ms 6492 KB Output is correct
52 Correct 1 ms 6492 KB Output is correct
53 Correct 1 ms 6492 KB Output is correct
54 Correct 1 ms 6492 KB Output is correct
55 Correct 2 ms 6492 KB Output is correct
56 Correct 1 ms 6492 KB Output is correct
57 Correct 1 ms 6492 KB Output is correct
58 Correct 1 ms 6492 KB Output is correct
59 Correct 1 ms 6492 KB Output is correct
60 Correct 1 ms 6492 KB Output is correct
61 Correct 1 ms 6492 KB Output is correct
62 Correct 1 ms 6492 KB Output is correct
63 Correct 1 ms 6492 KB Output is correct
64 Correct 83 ms 27604 KB Output is correct
65 Correct 80 ms 27472 KB Output is correct
66 Correct 81 ms 27640 KB Output is correct
67 Correct 84 ms 27700 KB Output is correct
68 Correct 11 ms 10072 KB Output is correct
69 Correct 9 ms 10320 KB Output is correct
70 Correct 9 ms 10076 KB Output is correct
71 Correct 9 ms 9888 KB Output is correct
72 Correct 9 ms 10076 KB Output is correct
73 Correct 10 ms 9928 KB Output is correct
74 Correct 85 ms 27488 KB Output is correct
75 Correct 99 ms 27800 KB Output is correct
76 Correct 84 ms 27636 KB Output is correct
77 Correct 81 ms 27692 KB Output is correct
78 Correct 79 ms 27448 KB Output is correct
79 Correct 86 ms 27700 KB Output is correct
80 Correct 80 ms 27476 KB Output is correct
81 Correct 76 ms 27476 KB Output is correct
82 Correct 76 ms 27476 KB Output is correct
83 Correct 80 ms 27612 KB Output is correct
84 Correct 81 ms 27636 KB Output is correct
85 Correct 80 ms 27640 KB Output is correct
86 Correct 79 ms 27636 KB Output is correct
87 Correct 103 ms 27684 KB Output is correct
88 Correct 127 ms 27924 KB Output is correct
89 Correct 80 ms 27636 KB Output is correct
90 Correct 97 ms 27556 KB Output is correct
91 Correct 85 ms 27480 KB Output is correct
92 Correct 80 ms 27576 KB Output is correct