oj.uz

Submission #109599

# Submission time Handle Problem Language Result Execution time Memory
109599 2019-05-07T07:33:23 Z JustasZ Ancient Books (IOI17_books) C++14
50 / 100
 466 ms 114772 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], nxt, L[maxn], R[maxn], fr, to;
ll base, add;
vector<int>p;
map<pii, int>dp;
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)
{
    if(dp.count(pii(l, r)))
        return dp[pii(l, 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(cur_l <= fr)
        return dp[pii(l, r)] = 2 + solve(cur_l, cur_r + 1);
    if(cur_r >= to)
        return dp[pii(l, r)] = 2 + solve(cur_l - 1, cur_r);

    pii a = extend(cur_l, cur_r + 1);
    pii b = extend(cur_l - 1, cur_r);
    if(a.x <= b.x && a.y >= b.y)
        return dp[pii(l, r)] = 2 + solve(cur_l, cur_r + 1);
    else
        return dp[pii(l, r)] = 2 + solve(cur_l - 1, cur_r);
}
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 = ++nxt, 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];
            }
        }
    }
    return base + solve(s, s);
}
/*int main()
{
    ios_base::sync_with_stdio(false), cin.tie(0);
    vector<int>perm;
    ifstream fin("in.txt");
    int n, s;
    fin >> n >> s;
    perm.resize(n);
    for(int i = 0; i < n; i++)
        fin >> perm[i];
    cout << minimum_walk(perm, s) << endl;
    return 0;
}*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 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 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 6 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 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 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 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 6 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 3 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 512 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 3 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 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 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 6 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 3 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 512 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 3 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 322 ms 24688 KB Output is correct
31 Correct 283 ms 24696 KB Output is correct
32 Correct 152 ms 20600 KB Output is correct
33 Correct 422 ms 114772 KB Output is correct
34 Correct 466 ms 114680 KB Output is correct
35 Correct 342 ms 88952 KB Output is correct
36 Correct 221 ms 43516 KB Output is correct
37 Correct 227 ms 25592 KB Output is correct
38 Correct 170 ms 24680 KB Output is correct
39 Correct 166 ms 24672 KB Output is correct
40 Correct 193 ms 24824 KB Output is correct
41 Correct 214 ms 24568 KB Output is correct
42 Correct 238 ms 24568 KB Output is correct
43 Correct 174 ms 24824 KB Output is correct

Subtask #4
0 / 20.0

# 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 4 ms 512 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Incorrect 3 ms 384 KB 3rd lines differ - on the 1st token, expected: '10478', found: '10490'
9 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 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 2 ms 384 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 2 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 2 ms 384 KB Output is correct
17 Correct 6 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 3 ms 384 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 3 ms 512 KB Output is correct
23 Correct 3 ms 512 KB Output is correct
24 Correct 2 ms 384 KB Output is correct
25 Correct 3 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 2 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 322 ms 24688 KB Output is correct
31 Correct 283 ms 24696 KB Output is correct
32 Correct 152 ms 20600 KB Output is correct
33 Correct 422 ms 114772 KB Output is correct
34 Correct 466 ms 114680 KB Output is correct
35 Correct 342 ms 88952 KB Output is correct
36 Correct 221 ms 43516 KB Output is correct
37 Correct 227 ms 25592 KB Output is correct
38 Correct 170 ms 24680 KB Output is correct
39 Correct 166 ms 24672 KB Output is correct
40 Correct 193 ms 24824 KB Output is correct
41 Correct 214 ms 24568 KB Output is correct
42 Correct 238 ms 24568 KB Output is correct
43 Correct 174 ms 24824 KB Output is correct
44 Correct 3 ms 384 KB Output is correct
45 Correct 3 ms 384 KB Output is correct
46 Correct 2 ms 384 KB Output is correct
47 Correct 4 ms 512 KB Output is correct
48 Correct 3 ms 512 KB Output is correct
49 Correct 2 ms 384 KB Output is correct
50 Correct 3 ms 384 KB Output is correct
51 Incorrect 3 ms 384 KB 3rd lines differ - on the 1st token, expected: '10478', found: '10490'
52 Halted 0 ms 0 KB -