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Submission #1033110

# Submission time Handle Problem Language Result Execution time Memory
1033110 2024-07-24T12:57:50 Z borisAngelov Long Mansion (JOI17_long_mansion) C++17
100 / 100
 232 ms 43088 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 500005;

int n, q;
int a[maxn];

int l[maxn];
int r[maxn];

vector<int> keysPos[maxn];

bool isPossible(int leftPos, int rightPos, int key)
{
    if (keysPos[key].empty()) return false;
    int pos = lower_bound(keysPos[key].begin(), keysPos[key].end(), leftPos) - keysPos[key].begin();
    return pos < keysPos[key].size() && keysPos[key][pos] <= rightPos;
}

void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int main()
{
    fastIO();

    cin >> n;

    for (int i = 1; i <= n - 1; ++i)
    {
        cin >> a[i];
    }

    for (int i = 1; i <= n; ++i)
    {
        int cnt;
        cin >> cnt;

        for (int j = 1; j <= cnt; ++j)
        {
            int key;
            cin >> key;
            keysPos[key].push_back(i);
        }
    }

    for (int i = 1; i <= n; ++i)
    {
        l[i] = r[i] = i;

        //cout << "on " << i << endl;

        while (true)
        {
            //cout << "left " << isPossible(l[i], r[i], a[l[i] - 1]) << "\n";

            if (l[i] > 1 && isPossible(l[i], r[i], a[l[i] - 1]) == true)
            {
                r[i] = max(r[i], r[l[i] - 1]);
                l[i] = l[l[i] - 1];
            }
            else if (r[i] < n && isPossible(l[i], r[i], a[r[i]]) == true)
            {
                ++r[i];
            }
            else
            {
                break;
            }
        }

        //cout << i << " -> " << l[i] << " " << r[i] << endl;
    }

    cin >> q;

    for (int i = 1; i <= q; ++i)
    {
        int x, y;
        cin >> x >> y;

        if (l[x] <= y && y <= r[x])
        {
            cout << "YES\n";
        }
        else
        {
            cout << "NO\n";
        }
    }

    return 0;
}

Compilation message

long_mansion.cpp: In function 'bool isPossible(int, int, int)':
long_mansion.cpp:19:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     return pos < keysPos[key].size() && keysPos[key][pos] <= rightPos;
      |            ~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12380 KB Output is correct
2 Correct 6 ms 12164 KB Output is correct
3 Correct 6 ms 12380 KB Output is correct
4 Correct 6 ms 12380 KB Output is correct
5 Correct 5 ms 12124 KB Output is correct
6 Correct 5 ms 12152 KB Output is correct
7 Correct 5 ms 12392 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12380 KB Output is correct
2 Correct 6 ms 12164 KB Output is correct
3 Correct 6 ms 12380 KB Output is correct
4 Correct 6 ms 12380 KB Output is correct
5 Correct 5 ms 12124 KB Output is correct
6 Correct 5 ms 12152 KB Output is correct
7 Correct 5 ms 12392 KB Output is correct
8 Correct 60 ms 18000 KB Output is correct
9 Correct 59 ms 18000 KB Output is correct
10 Correct 70 ms 18304 KB Output is correct
11 Correct 61 ms 18612 KB Output is correct
12 Correct 55 ms 17748 KB Output is correct
13 Correct 55 ms 18256 KB Output is correct
14 Correct 67 ms 18364 KB Output is correct
15 Correct 56 ms 18260 KB Output is correct
16 Correct 54 ms 18000 KB Output is correct
17 Correct 61 ms 18256 KB Output is correct
18 Correct 56 ms 18256 KB Output is correct
19 Correct 57 ms 18260 KB Output is correct
20 Correct 57 ms 18256 KB Output is correct
21 Correct 55 ms 18044 KB Output is correct
22 Correct 56 ms 18260 KB Output is correct
23 Correct 60 ms 18180 KB Output is correct
24 Correct 61 ms 18048 KB Output is correct
25 Correct 64 ms 17996 KB Output is correct
26 Correct 59 ms 18004 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 120 ms 21072 KB Output is correct
2 Correct 132 ms 24308 KB Output is correct
3 Correct 107 ms 23996 KB Output is correct
4 Correct 114 ms 24556 KB Output is correct
5 Correct 112 ms 24420 KB Output is correct
6 Correct 98 ms 22648 KB Output is correct
7 Correct 86 ms 22612 KB Output is correct
8 Correct 84 ms 22608 KB Output is correct
9 Correct 86 ms 22496 KB Output is correct
10 Correct 81 ms 22612 KB Output is correct
11 Correct 81 ms 22356 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 12380 KB Output is correct
2 Correct 6 ms 12164 KB Output is correct
3 Correct 6 ms 12380 KB Output is correct
4 Correct 6 ms 12380 KB Output is correct
5 Correct 5 ms 12124 KB Output is correct
6 Correct 5 ms 12152 KB Output is correct
7 Correct 5 ms 12392 KB Output is correct
8 Correct 60 ms 18000 KB Output is correct
9 Correct 59 ms 18000 KB Output is correct
10 Correct 70 ms 18304 KB Output is correct
11 Correct 61 ms 18612 KB Output is correct
12 Correct 55 ms 17748 KB Output is correct
13 Correct 55 ms 18256 KB Output is correct
14 Correct 67 ms 18364 KB Output is correct
15 Correct 56 ms 18260 KB Output is correct
16 Correct 54 ms 18000 KB Output is correct
17 Correct 61 ms 18256 KB Output is correct
18 Correct 56 ms 18256 KB Output is correct
19 Correct 57 ms 18260 KB Output is correct
20 Correct 57 ms 18256 KB Output is correct
21 Correct 55 ms 18044 KB Output is correct
22 Correct 56 ms 18260 KB Output is correct
23 Correct 60 ms 18180 KB Output is correct
24 Correct 61 ms 18048 KB Output is correct
25 Correct 64 ms 17996 KB Output is correct
26 Correct 59 ms 18004 KB Output is correct
27 Correct 120 ms 21072 KB Output is correct
28 Correct 132 ms 24308 KB Output is correct
29 Correct 107 ms 23996 KB Output is correct
30 Correct 114 ms 24556 KB Output is correct
31 Correct 112 ms 24420 KB Output is correct
32 Correct 98 ms 22648 KB Output is correct
33 Correct 86 ms 22612 KB Output is correct
34 Correct 84 ms 22608 KB Output is correct
35 Correct 86 ms 22496 KB Output is correct
36 Correct 81 ms 22612 KB Output is correct
37 Correct 81 ms 22356 KB Output is correct
38 Correct 162 ms 33108 KB Output is correct
39 Correct 165 ms 33876 KB Output is correct
40 Correct 135 ms 30800 KB Output is correct
41 Correct 232 ms 31408 KB Output is correct
42 Correct 94 ms 24172 KB Output is correct
43 Correct 99 ms 23888 KB Output is correct
44 Correct 136 ms 29640 KB Output is correct
45 Correct 139 ms 30036 KB Output is correct
46 Correct 142 ms 30288 KB Output is correct
47 Correct 122 ms 24148 KB Output is correct
48 Correct 95 ms 23632 KB Output is correct
49 Correct 147 ms 29312 KB Output is correct
50 Correct 148 ms 29700 KB Output is correct
51 Correct 148 ms 30804 KB Output is correct
52 Correct 111 ms 31060 KB Output is correct
53 Correct 139 ms 36816 KB Output is correct
54 Correct 151 ms 43088 KB Output is correct
55 Correct 140 ms 37304 KB Output is correct