oj.uz

Submission #827243

# Submission time Handle Problem Language Result Execution time Memory
827243 2023-08-16T10:05:08 Z vnm06 Ancient Books (IOI17_books) C++14
100 / 100
 91 ms 22848 KB 
#include<bits/stdc++.h>
#include "books.h"
using namespace std;

int n, val=1;
int a[1000005];

int ls, rs;
int le, ri;
stack<int> st;

void dfs(int v)
{
    st.push(v);
    while(!st.empty())
    {
        v=st.top();
        ///used[v]=val;
        st.pop();
        v=a[v];
        if(v<le)
        {
            for(int i=v; i<le; i++) st.push(i);
            le=v;
        }
        else if(ri<v)
        {
            for(int i=ri+1; i<=v; i++) st.push(i);
            ri=v;
        }
    }
}

long long minimum_walk(std::vector<int> p, int s)
{
    long long ans=0;
    n=p.size();
    for(int i=0; i<n; i++)
    {
        a[i]=p[i];
        int st=a[i]-i;
        if(st<0) ans-=st;
        else ans+=st;
    }
    int le_gr=0, ri_gr=n-1;
    while(le_gr<s && a[le_gr]==le_gr) le_gr++;
    while(ri_gr>s && a[ri_gr]==ri_gr) ri_gr--;
    ls=0, rs=0;
    le=s, ri=s;
    int obsht=0;
    dfs(s);
    while(le>le_gr || ri<ri_gr)
    {
        if(le==le_gr)
        {
            rs++;
            ri++;
            dfs(ri);
        }
        else if(ri==ri_gr)
        {
            le--;
            ls++;
            dfs(le);
        }
        else
        {
            int tle=le, tri=ri;
            if(ls<rs)
            {
                le--;
                ls++;
                dfs(le);
                if(tri!=ri)
                {
                    obsht=ls;
                    rs=ls;
                }
            }
            else
            {
                ri++;
                rs++;
                dfs(ri);
                if(tle!=le)
                {
                    obsht=rs;
                    ls=rs;
                }
            }
        }
    }
	return ans+2*(ls+rs-obsht);
}

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 212 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 308 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 1 ms 212 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 312 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 212 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 308 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 1 ms 212 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 312 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 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 316 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 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 212 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 308 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 1 ms 212 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 312 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 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 316 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 86 ms 22772 KB Output is correct
31 Correct 84 ms 22848 KB Output is correct
32 Correct 76 ms 18676 KB Output is correct
33 Correct 82 ms 18664 KB Output is correct
34 Correct 82 ms 18764 KB Output is correct
35 Correct 83 ms 18636 KB Output is correct
36 Correct 84 ms 18676 KB Output is correct
37 Correct 88 ms 18656 KB Output is correct
38 Correct 78 ms 18664 KB Output is correct
39 Correct 77 ms 18796 KB Output is correct
40 Correct 78 ms 18916 KB Output is correct
41 Correct 79 ms 20796 KB Output is correct
42 Correct 79 ms 20332 KB Output is correct
43 Correct 79 ms 22756 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 308 KB Output is correct
2 Correct 0 ms 316 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 316 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 312 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 212 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 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 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 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 308 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 308 KB Output is correct
14 Correct 1 ms 212 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 312 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 0 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 0 ms 316 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 86 ms 22772 KB Output is correct
31 Correct 84 ms 22848 KB Output is correct
32 Correct 76 ms 18676 KB Output is correct
33 Correct 82 ms 18664 KB Output is correct
34 Correct 82 ms 18764 KB Output is correct
35 Correct 83 ms 18636 KB Output is correct
36 Correct 84 ms 18676 KB Output is correct
37 Correct 88 ms 18656 KB Output is correct
38 Correct 78 ms 18664 KB Output is correct
39 Correct 77 ms 18796 KB Output is correct
40 Correct 78 ms 18916 KB Output is correct
41 Correct 79 ms 20796 KB Output is correct
42 Correct 79 ms 20332 KB Output is correct
43 Correct 79 ms 22756 KB Output is correct
44 Correct 0 ms 308 KB Output is correct
45 Correct 0 ms 316 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 0 ms 316 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 212 KB Output is correct
54 Correct 0 ms 312 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Correct 1 ms 212 KB Output is correct
62 Correct 1 ms 308 KB Output is correct
63 Correct 0 ms 212 KB Output is correct
64 Correct 81 ms 22388 KB Output is correct
65 Correct 79 ms 21620 KB Output is correct
66 Correct 78 ms 19056 KB Output is correct
67 Correct 78 ms 20072 KB Output is correct
68 Correct 8 ms 2372 KB Output is correct
69 Correct 8 ms 2132 KB Output is correct
70 Correct 8 ms 2364 KB Output is correct
71 Correct 8 ms 2368 KB Output is correct
72 Correct 8 ms 2004 KB Output is correct
73 Correct 8 ms 2228 KB Output is correct
74 Correct 81 ms 18676 KB Output is correct
75 Correct 83 ms 18660 KB Output is correct
76 Correct 80 ms 22636 KB Output is correct
77 Correct 91 ms 22696 KB Output is correct
78 Correct 85 ms 19948 KB Output is correct
79 Correct 77 ms 19696 KB Output is correct
80 Correct 74 ms 18664 KB Output is correct
81 Correct 78 ms 19044 KB Output is correct
82 Correct 77 ms 18920 KB Output is correct
83 Correct 80 ms 18660 KB Output is correct
84 Correct 80 ms 18668 KB Output is correct
85 Correct 84 ms 18760 KB Output is correct
86 Correct 77 ms 18676 KB Output is correct
87 Correct 82 ms 18664 KB Output is correct
88 Correct 82 ms 18672 KB Output is correct
89 Correct 86 ms 18664 KB Output is correct
90 Correct 78 ms 18764 KB Output is correct
91 Correct 77 ms 18668 KB Output is correct
92 Correct 78 ms 18920 KB Output is correct