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Submission #857218

# Submission time Handle Problem Language Result Execution time Memory
857218 2023-10-05T15:28:05 Z Canhhao Selling RNA Strands (JOI16_selling_rna) C++17
100 / 100
 158 ms 217396 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 5;
const int T = 5e6 + 5;

int trie1[T][4], trie2[T][4], L[T], R[T], ctr[300];
string str[N];
vector<int> list_index[T];

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    ctr['A'] = 0; ctr['C'] = 1; ctr['G'] = 2; ctr['U'] = 3;

    int n, m; cin >> n >> m;
    for (int i = 1; i <= n; i++) 
        cin >> str[i];
    
    sort (str + 1, str + n + 1);

    int cnt1 = 0, cnt2 = 0;
    for (int i = 1; i <= n; i++) {
        int u = 0;
        for (int j = 0; j < str[i].size(); j++) {
            if (trie1[u][ctr[str[i][j]]] == 0)
                trie1[u][ctr[str[i][j]]] = ++ cnt1;
            u = trie1[u][ctr[str[i][j]]];
            if (L[u] == 0) L[u] = i;
            L[u] = min(L[u], i);
            R[u] = max(R[u], i);
        }

        u = 0;
        for (int j = str[i].size() - 1; j >= 0; j--) {
            if (trie2[u][ctr[str[i][j]]] == 0)
                trie2[u][ctr[str[i][j]]] = ++ cnt2;
            u = trie2[u][ctr[str[i][j]]];
            list_index[u].push_back(i);
        }
    }

    for (int i = 1; i <= cnt2; i++)
        sort(list_index[i].begin(), list_index[i].end());

    while (m --) {
        string P, Q; cin >> P >> Q;
        int u = 0;
        for (int j = 0; j < P.size(); j++) {
            if (trie1[u][ctr[P[j]]] == 0) {
                u = -1;
                break;
            } 
            u = trie1[u][ctr[P[j]]];
        }

        if (u == -1) {
            cout << "0\n";
            continue;
        }

        int v = 0;
        for (int j = Q.size() - 1; j >= 0; j--) {
            if (trie2[v][ctr[Q[j]]] == 0) {
                v = -1;
                break;
            }
            v = trie2[v][ctr[Q[j]]];
        }
        
        if (v == -1) {
            cout << "0\n";
            continue;
        }

        int x = lower_bound(list_index[v].begin(), list_index[v].end(), L[u]) - list_index[v].begin();
        int y = upper_bound(list_index[v].begin(), list_index[v].end(), R[u]) - list_index[v].begin();

        cout << max(0, y - x) << "\n";
    }
}

Compilation message

selling_rna.cpp: In function 'int32_t main()':
selling_rna.cpp:26:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |         for (int j = 0; j < str[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~~~
selling_rna.cpp:27:39: warning: array subscript has type 'char' [-Wchar-subscripts]
   27 |             if (trie1[u][ctr[str[i][j]]] == 0)
      |                                       ^
selling_rna.cpp:28:39: warning: array subscript has type 'char' [-Wchar-subscripts]
   28 |                 trie1[u][ctr[str[i][j]]] = ++ cnt1;
      |                                       ^
selling_rna.cpp:29:39: warning: array subscript has type 'char' [-Wchar-subscripts]
   29 |             u = trie1[u][ctr[str[i][j]]];
      |                                       ^
selling_rna.cpp:37:39: warning: array subscript has type 'char' [-Wchar-subscripts]
   37 |             if (trie2[u][ctr[str[i][j]]] == 0)
      |                                       ^
selling_rna.cpp:38:39: warning: array subscript has type 'char' [-Wchar-subscripts]
   38 |                 trie2[u][ctr[str[i][j]]] = ++ cnt2;
      |                                       ^
selling_rna.cpp:39:39: warning: array subscript has type 'char' [-Wchar-subscripts]
   39 |             u = trie2[u][ctr[str[i][j]]];
      |                                       ^
selling_rna.cpp:50:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         for (int j = 0; j < P.size(); j++) {
      |                         ~~^~~~~~~~~~
selling_rna.cpp:51:34: warning: array subscript has type 'char' [-Wchar-subscripts]
   51 |             if (trie1[u][ctr[P[j]]] == 0) {
      |                                  ^
selling_rna.cpp:55:34: warning: array subscript has type 'char' [-Wchar-subscripts]
   55 |             u = trie1[u][ctr[P[j]]];
      |                                  ^
selling_rna.cpp:65:34: warning: array subscript has type 'char' [-Wchar-subscripts]
   65 |             if (trie2[v][ctr[Q[j]]] == 0) {
      |                                  ^
selling_rna.cpp:69:34: warning: array subscript has type 'char' [-Wchar-subscripts]
   69 |             v = trie2[v][ctr[Q[j]]];
      |                                  ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 121692 KB Output is correct
2 Correct 26 ms 121692 KB Output is correct
3 Correct 25 ms 121692 KB Output is correct
4 Correct 25 ms 121688 KB Output is correct
5 Correct 25 ms 121692 KB Output is correct
6 Correct 25 ms 121692 KB Output is correct
7 Correct 24 ms 121520 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 149 ms 217396 KB Output is correct
2 Correct 158 ms 213528 KB Output is correct
3 Correct 101 ms 182372 KB Output is correct
4 Correct 98 ms 179508 KB Output is correct
5 Correct 124 ms 209492 KB Output is correct
6 Correct 126 ms 210768 KB Output is correct
7 Correct 73 ms 135024 KB Output is correct
8 Correct 143 ms 182096 KB Output is correct
9 Correct 128 ms 173748 KB Output is correct
10 Correct 120 ms 171996 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 122456 KB Output is correct
2 Correct 40 ms 122456 KB Output is correct
3 Correct 42 ms 122448 KB Output is correct
4 Correct 38 ms 122196 KB Output is correct
5 Correct 40 ms 122448 KB Output is correct
6 Correct 43 ms 122484 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 121692 KB Output is correct
2 Correct 26 ms 121692 KB Output is correct
3 Correct 25 ms 121692 KB Output is correct
4 Correct 25 ms 121688 KB Output is correct
5 Correct 25 ms 121692 KB Output is correct
6 Correct 25 ms 121692 KB Output is correct
7 Correct 24 ms 121520 KB Output is correct
8 Correct 149 ms 217396 KB Output is correct
9 Correct 158 ms 213528 KB Output is correct
10 Correct 101 ms 182372 KB Output is correct
11 Correct 98 ms 179508 KB Output is correct
12 Correct 124 ms 209492 KB Output is correct
13 Correct 126 ms 210768 KB Output is correct
14 Correct 73 ms 135024 KB Output is correct
15 Correct 143 ms 182096 KB Output is correct
16 Correct 128 ms 173748 KB Output is correct
17 Correct 120 ms 171996 KB Output is correct
18 Correct 43 ms 122456 KB Output is correct
19 Correct 40 ms 122456 KB Output is correct
20 Correct 42 ms 122448 KB Output is correct
21 Correct 38 ms 122196 KB Output is correct
22 Correct 40 ms 122448 KB Output is correct
23 Correct 43 ms 122484 KB Output is correct
24 Correct 150 ms 201820 KB Output is correct
25 Correct 158 ms 201812 KB Output is correct
26 Correct 152 ms 200824 KB Output is correct
27 Correct 106 ms 173008 KB Output is correct
28 Correct 146 ms 145152 KB Output is correct
29 Correct 84 ms 129088 KB Output is correct