oj.uz

Submission #290140

# Submission time Handle Problem Language Result Execution time Memory
290140 2020-09-03T12:34:03 Z SamAnd The Big Prize (IOI17_prize) C++17
100 / 100
 68 ms 5336 KB 
#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
typedef long long ll;
const int N = 200005;

vector<int> vv[N];
vector<int> qry(int x)
{
    if (!vv[x].empty())
        return vv[x];
    return vv[x] = ask(x);
}

int s;

int ans;
bool rec(int l, int r, int ql, int qr)
{
    if (l > r)
        return false;
    int m = (l + r) / 2;
    while (m <= r)
    {
        if (qry(m)[0] + qry(m)[1] == s)
        {
            if (qry(m)[0] - ql > 0)
                if (rec(l, m - 1, ql, qry(m)[1]))
                    return true;
            if (qry(m)[1] - qr > 0)
                if (rec(m + 1, r, qry(m)[0], qr))
                    return true;
            return false;
        }
        else
        {
            if (qry(m)[0] + qry(m)[1] == 0)
            {
                ans = m;
                return true;
            }
            ++m;
        }
    }
    --m;
    while (m >= l)
    {
        if (qry(m)[0] + qry(m)[1] == s)
        {
            if (qry(m)[0] - ql > 0)
                if (rec(l, m - 1, ql, qry(m)[1]))
                    return true;
            if (qry(m)[1] - qr > 0)
                if (rec(m + 1, r, qry(m)[0], qr))
                    return true;
            return false;
        }
        else
        {
            if (qry(m)[0] + qry(m)[1] == 0)
            {
                ans = m;
                return true;
            }
            --m;
        }
    }
    ++m;
    return false;
}

int find_best(int n)
{
    for (int x = 0; x < min(n, 700); ++x)
    {
        s = max(s, qry(x)[0] + qry(x)[1]);
        if (s > 100)
            break;
    }
    assert(rec(0, n - 1, 0, 0));
    return ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 4992 KB Output is correct
2 Correct 14 ms 4992 KB Output is correct
3 Correct 12 ms 4992 KB Output is correct
4 Correct 11 ms 4992 KB Output is correct
5 Correct 13 ms 4992 KB Output is correct
6 Correct 11 ms 4992 KB Output is correct
7 Correct 12 ms 4992 KB Output is correct
8 Correct 13 ms 4992 KB Output is correct
9 Correct 13 ms 4992 KB Output is correct
10 Correct 12 ms 4992 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 4992 KB Output is correct
2 Correct 12 ms 4992 KB Output is correct
3 Correct 13 ms 4992 KB Output is correct
4 Correct 12 ms 4992 KB Output is correct
5 Correct 7 ms 5140 KB Output is correct
6 Correct 10 ms 4992 KB Output is correct
7 Correct 7 ms 5144 KB Output is correct
8 Correct 11 ms 4992 KB Output is correct
9 Correct 10 ms 4992 KB Output is correct
10 Correct 10 ms 4992 KB Output is correct
11 Correct 13 ms 4992 KB Output is correct
12 Correct 11 ms 4992 KB Output is correct
13 Correct 14 ms 4992 KB Output is correct
14 Correct 6 ms 4992 KB Output is correct
15 Correct 9 ms 4992 KB Output is correct
16 Correct 36 ms 5112 KB Output is correct
17 Correct 4 ms 5056 KB Output is correct
18 Correct 58 ms 5180 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 13 ms 4992 KB Output is correct
21 Correct 25 ms 5112 KB Output is correct
22 Correct 8 ms 4992 KB Output is correct
23 Correct 13 ms 4992 KB Output is correct
24 Correct 14 ms 4992 KB Output is correct
25 Correct 29 ms 5112 KB Output is correct
26 Correct 27 ms 5112 KB Output is correct
27 Correct 12 ms 4992 KB Output is correct
28 Correct 27 ms 5228 KB Output is correct
29 Correct 23 ms 5336 KB Output is correct
30 Correct 49 ms 5240 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 15 ms 4992 KB Output is correct
33 Correct 5 ms 4992 KB Output is correct
34 Correct 15 ms 5128 KB Output is correct
35 Correct 11 ms 4992 KB Output is correct
36 Correct 13 ms 4992 KB Output is correct
37 Correct 11 ms 4992 KB Output is correct
38 Correct 7 ms 5136 KB Output is correct
39 Correct 23 ms 5112 KB Output is correct
40 Correct 37 ms 5168 KB Output is correct
41 Correct 28 ms 5112 KB Output is correct
42 Correct 33 ms 5112 KB Output is correct
43 Correct 23 ms 5112 KB Output is correct
44 Correct 18 ms 5112 KB Output is correct
45 Correct 18 ms 4992 KB Output is correct
46 Correct 4 ms 4992 KB Output is correct
47 Correct 15 ms 5168 KB Output is correct
48 Correct 39 ms 5072 KB Output is correct
49 Correct 6 ms 4992 KB Output is correct
50 Correct 67 ms 5112 KB Output is correct
51 Correct 22 ms 5112 KB Output is correct
52 Correct 4 ms 4992 KB Output is correct
53 Correct 12 ms 4992 KB Output is correct
54 Correct 29 ms 5112 KB Output is correct
55 Correct 4 ms 5056 KB Output is correct
56 Correct 52 ms 5112 KB Output is correct
57 Correct 43 ms 5112 KB Output is correct
58 Correct 32 ms 5112 KB Output is correct
59 Correct 32 ms 5112 KB Output is correct
60 Correct 17 ms 5144 KB Output is correct
61 Correct 11 ms 4992 KB Output is correct
62 Correct 13 ms 4992 KB Output is correct
63 Correct 12 ms 5188 KB Output is correct
64 Correct 12 ms 5080 KB Output is correct
65 Correct 9 ms 4992 KB Output is correct
66 Correct 9 ms 4992 KB Output is correct
67 Correct 9 ms 4992 KB Output is correct
68 Correct 10 ms 4992 KB Output is correct
69 Correct 9 ms 4992 KB Output is correct
70 Correct 7 ms 4992 KB Output is correct
71 Correct 50 ms 5112 KB Output is correct
72 Correct 13 ms 4992 KB Output is correct
73 Correct 57 ms 5132 KB Output is correct
74 Correct 49 ms 5204 KB Output is correct
75 Correct 13 ms 5096 KB Output is correct
76 Correct 49 ms 5180 KB Output is correct
77 Correct 49 ms 5224 KB Output is correct
78 Correct 15 ms 5068 KB Output is correct
79 Correct 33 ms 5112 KB Output is correct
80 Correct 55 ms 5212 KB Output is correct
81 Correct 65 ms 5212 KB Output is correct
82 Correct 55 ms 5184 KB Output is correct
83 Correct 14 ms 4992 KB Output is correct
84 Correct 55 ms 5136 KB Output is correct
85 Correct 68 ms 5112 KB Output is correct
86 Correct 10 ms 5024 KB Output is correct
87 Correct 9 ms 4992 KB Output is correct
88 Correct 8 ms 4992 KB Output is correct
89 Correct 11 ms 5076 KB Output is correct
90 Correct 11 ms 4992 KB Output is correct
91 Correct 8 ms 4992 KB Output is correct
92 Correct 7 ms 5080 KB Output is correct
93 Correct 10 ms 5072 KB Output is correct
94 Correct 14 ms 5092 KB Output is correct
95 Correct 14 ms 5084 KB Output is correct
96 Correct 13 ms 4992 KB Output is correct
97 Correct 7 ms 5084 KB Output is correct