oj.uz

Submission #109707

# Submission time Handle Problem Language Result Execution time Memory
109707 2019-05-07T15:12:29 Z JustasZ Ancient Books (IOI17_books) C++14
100 / 100
 340 ms 27896 KB 
#include "books.h"
#include <bits/stdc++.h>
#define pb push_back
#define x first
#define y second
#define all(a) a.begin(), a.end()
#define sz(a) (int)a.size()
#define rd() abs((int)rng())
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
const int maxn = 1e6 + 100;
const int mod = 1e9 + 7;
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
int n, s, val[maxn], nex, L[maxn], R[maxn], fr, to, prv[maxn], nxt[maxn];
ll base;
vector<int>p;
pii extend(int l, int r)
{
    int cur_l = l, cur_r = r;
    int i = l, j = r;
    while(i >= cur_l || j <= cur_r)
    {
        if(i >= cur_l)
        {
            cur_l = min(cur_l, L[val[i]]);
            cur_r = max(cur_r, R[val[i]]);
            --i;
        }
        if(j <= cur_r)
        {
            cur_l = min(cur_l, L[val[j]]);
            cur_r = max(cur_r, R[val[j]]);
            j++;
        }
    }
    return {cur_l, cur_r};
}
ll solve(int l, int r)
{
    pii aa = extend(l, r);
    int cur_l = aa.x, cur_r = aa.y;
    if(cur_l <= fr && cur_r >= to)
        return 0;
    if(prv[cur_l] == -1)
    {
        if(cur_l > fr)
            return 2 + solve(cur_l - 1, cur_r);
        else
            return 2 + solve(cur_l, cur_r + 1);
    }
    pii a = pii(cur_l, cur_r), b = pii(cur_l, cur_r);
    int pr = prv[cur_l], nx = nxt[cur_r];
    ll add1 = 0, add2 = 0;
    while(a.x > pr)
        a = extend(a.x - 1, a.y), add1 += 2;
    while(b.y < nx)
        b = extend(b.x, b.y + 1), add2 += 2;
    if(add1 < add2)
        return add1 + solve(a.x, a.y);
    else
        return add2 + solve(b.x, b.y);
}
ll minimum_walk(vector<int>perm, int S)
{
    p = perm;
    s = S;
    n = sz(p);
    for(int i = 1; i <= n; i++)
        L[i] = mod, R[i] = -mod;
    to = n - 1, fr = 0;
    while(to >= 0 && p[to] == to)
        --to;
    while(fr < n && p[fr] == fr)
        ++fr;
    if(fr > to)
        return 0;
    for(int i = 0; i < n; i++)
    {
        if(val[i] == 0)
        {
            int col = ++nex, cur = i;
            while(val[cur] == 0)
            {
                val[cur] = col;
                L[col] = min(L[col], cur);
                R[col] = max(R[col], cur);
                base += abs(p[cur] - cur);
                cur = p[cur];
            }
        }
    }
    int pos = -1;
    for(int i = 0; i <= s; i++)
    {
        prv[i] = pos;
        if(R[val[i]] > s)
            pos = i;
    }
    pos = -1;
    for(int i = n - 1; i >= s; i--)
    {
        nxt[i] = pos;
        if(L[val[i]] < s)
            pos = i;
    }
    return base + solve(s, s);
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 408 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 408 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 3 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 408 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 3 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 289 ms 27732 KB Output is correct
31 Correct 340 ms 27748 KB Output is correct
32 Correct 210 ms 20088 KB Output is correct
33 Correct 166 ms 27768 KB Output is correct
34 Correct 183 ms 27768 KB Output is correct
35 Correct 156 ms 27868 KB Output is correct
36 Correct 154 ms 27740 KB Output is correct
37 Correct 165 ms 27768 KB Output is correct
38 Correct 164 ms 27756 KB Output is correct
39 Correct 166 ms 27768 KB Output is correct
40 Correct 187 ms 27740 KB Output is correct
41 Correct 258 ms 27768 KB Output is correct
42 Correct 201 ms 27868 KB Output is correct
43 Correct 162 ms 27772 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 356 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 412 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 408 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 2 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 2 ms 384 KB Output is correct
18 Correct 2 ms 384 KB Output is correct
19 Correct 3 ms 384 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 3 ms 384 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 2 ms 384 KB Output is correct
26 Correct 2 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 3 ms 384 KB Output is correct
29 Correct 3 ms 384 KB Output is correct
30 Correct 289 ms 27732 KB Output is correct
31 Correct 340 ms 27748 KB Output is correct
32 Correct 210 ms 20088 KB Output is correct
33 Correct 166 ms 27768 KB Output is correct
34 Correct 183 ms 27768 KB Output is correct
35 Correct 156 ms 27868 KB Output is correct
36 Correct 154 ms 27740 KB Output is correct
37 Correct 165 ms 27768 KB Output is correct
38 Correct 164 ms 27756 KB Output is correct
39 Correct 166 ms 27768 KB Output is correct
40 Correct 187 ms 27740 KB Output is correct
41 Correct 258 ms 27768 KB Output is correct
42 Correct 201 ms 27868 KB Output is correct
43 Correct 162 ms 27772 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 2 ms 384 KB Output is correct
46 Correct 2 ms 356 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 3 ms 384 KB Output is correct
49 Correct 3 ms 412 KB Output is correct
50 Correct 2 ms 384 KB Output is correct
51 Correct 3 ms 384 KB Output is correct
52 Correct 2 ms 384 KB Output is correct
53 Correct 3 ms 384 KB Output is correct
54 Correct 3 ms 384 KB Output is correct
55 Correct 2 ms 384 KB Output is correct
56 Correct 2 ms 384 KB Output is correct
57 Correct 2 ms 384 KB Output is correct
58 Correct 3 ms 384 KB Output is correct
59 Correct 3 ms 384 KB Output is correct
60 Correct 2 ms 384 KB Output is correct
61 Correct 2 ms 384 KB Output is correct
62 Correct 3 ms 384 KB Output is correct
63 Correct 2 ms 384 KB Output is correct
64 Correct 131 ms 27768 KB Output is correct
65 Correct 185 ms 27896 KB Output is correct
66 Correct 189 ms 27712 KB Output is correct
67 Correct 218 ms 27768 KB Output is correct
68 Correct 18 ms 3072 KB Output is correct
69 Correct 21 ms 3192 KB Output is correct
70 Correct 16 ms 3072 KB Output is correct
71 Correct 15 ms 3200 KB Output is correct
72 Correct 17 ms 3072 KB Output is correct
73 Correct 17 ms 3200 KB Output is correct
74 Correct 185 ms 27852 KB Output is correct
75 Correct 173 ms 27772 KB Output is correct
76 Correct 153 ms 27740 KB Output is correct
77 Correct 156 ms 27748 KB Output is correct
78 Correct 142 ms 27752 KB Output is correct
79 Correct 166 ms 27772 KB Output is correct
80 Correct 130 ms 19924 KB Output is correct
81 Correct 262 ms 27768 KB Output is correct
82 Correct 168 ms 27768 KB Output is correct
83 Correct 199 ms 27772 KB Output is correct
84 Correct 175 ms 27768 KB Output is correct
85 Correct 163 ms 27768 KB Output is correct
86 Correct 148 ms 27768 KB Output is correct
87 Correct 155 ms 27768 KB Output is correct
88 Correct 167 ms 27768 KB Output is correct
89 Correct 145 ms 27768 KB Output is correct
90 Correct 140 ms 27720 KB Output is correct
91 Correct 154 ms 27712 KB Output is correct
92 Correct 165 ms 27768 KB Output is correct