oj.uz

Submission #668189

# Submission time Handle Problem Language Result Execution time Memory
668189 2022-12-03T08:24:39 Z Ninja_Kunai Selling RNA Strands (JOI16_selling_rna) C++17
35 / 100
 487 ms 669808 KB 
/**
*    Author :  Nguyen Tuan Vu
*    Created : 02.12.2022
**/
 
#pragma GCC optimize("O2")
#pragma GCC target("avx,avx2,fma")
#include<bits/stdc++.h>
#define MASK(x) ((1)<<(x))
#define BIT(x, i) (((x)>>(i))&(1))
#define ALL(v)  (v).begin(), (v).end()
#define REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define FOR(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define FORD(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i)
#define db(val) "["#val" = "<<(val)<<"] "
#define TIME  (1.0 * clock() / CLOCKS_PER_SEC)
 
template <class X, class Y> bool minimize(X &a, Y b) {
    if (a > b) return a = b, true;
    return false;
}
template <class X, class Y> bool maximize(X &a, Y b) {
    if (a < b) return a = b, true;
    return false;
}
 
using namespace std;
 
mt19937 jdg(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int l, int r) {return l + jdg() % (r - l + 1);}
 
void file(){
    #define TASK "TASK"
    if(fopen(TASK".inp", "r")) {
        freopen(TASK".inp", "r", stdin);
        freopen(TASK".out", "w", stdout);
    }
}
 
const int N = 1e5 + 5;
int n, nquery;
string s[N];
 
//namespace sub4 {
    struct TRIE {
        struct node {
            node *child[26];
            int L, R;
            vector <int> S;
 
            node() {
                S.clear();
                L = -1, R = -1;
                REP(i, 26) child[i] = NULL;
            }
        } *root;
 
        TRIE() {
            root = new node();
        }
 
        void add(string &x, int ID, int type) {
            node *p = root;
            for (auto c : x) {
                if (p -> child[c - 'A'] == NULL) p -> child[c - 'A'] = new node();
                p = p -> child[c - 'A'];
                if (type == 0) {
                    if (p -> L == -1) p -> L = p -> R = ID;
                    else p -> R = ID;
                }
                else {
                    p -> S.push_back(ID);
                }
            }
        }
 
        pair <int, int> get(string &x) {
            node *p = root;
            for (auto c : x) {
                if (p -> child[c - 'A'] == NULL) return make_pair(-1, 0);
                p = p -> child[c - 'A'];
            }
 
            return make_pair(p -> L, p -> R);
        }
 
        int get(string &x, int L, int R) {
            node *p = root;
            for (auto c : x) {
                if (p -> child[c - 'A'] == NULL) return 0;
                p = p -> child[c - 'A'];
            }
    
            int ans = 0;
            for (auto x : p -> S) if (L <= x && x <= R) ++ans;
            return ans;
        }        
    } pref, suff;
 
    const int base = 31;
    const int Mod = 1e9 + 7;
    vector <int> Hash[N];
    int Pow[N], ID[N];
 
    int getHash(int i, int l, int r) {
        return (Hash[i][r] - 1ll * Hash[i][l - 1] * Pow[r - l + 1] % Mod + Mod) % Mod;
    }
 
    void solve() {
        FOR(i, 1, n) {
            Hash[i].resize(s[i].size() + 5, 0);
            REP(j, s[i].size()) Hash[i][j + 1] = (1ll * Hash[i][j] * base % Mod + s[i][j] - 'A' + 1) % Mod;
        }
 
        Pow[0] = 1;
        FOR(i, 1, 1e5) Pow[i] = 1ll * Pow[i - 1] * base % Mod;
        FOR(i, 1, n) ID[i] = i;
        sort (ID + 1, ID + n + 1, [] (int &x, int &y) {
            int l = 0, r = min((int) s[x].size(), (int) s[y].size()) + 1;
            while (r - l > 1) {
                int mid = (l + r) >> 1;
                if (getHash(x, 1, mid) == getHash(y, 1, mid)) l = mid;
                else r = mid;
            }
 
            if (l == min((int) s[x].size(), (int) s[y].size())) {
                return (s[x].size() <= s[y].size());
            }
 
            return (s[x][l] <= s[y][l]);
        });
 
        //if (n > 100 || nquery > 100) return;
        FOR(i, 1, n) {
            pref.add(s[ID[i]], i, 0);
            reverse(ALL(s[ID[i]]));
            suff.add(s[ID[i]], i, 1);
        }
 
        while (nquery--) {
            string PREF, SUFF;
            cin >> PREF >> SUFF;
 
            reverse(ALL(SUFF));
            pair <int, int> Pref = pref.get(PREF);
            int Suff = suff.get(SUFF, Pref.first, Pref.second);
            
            cout << Suff << '\n';
        }
    }
//}
int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    file();
 
    cin >> n >> nquery;
    FOR(i, 1, n) cin >> s[i];
    //sub4::solve();
    solve();
    cerr << "Time elapsed: " << TIME << " s.\n";
    return 0;
}
 
/*
==================================================+
INPUT:                                            |
--------------------------------------------------|
 
--------------------------------------------------|
==================================================+
OUTPUT:                                           |
--------------------------------------------------|
 
--------------------------------------------------|
==================================================+
*/

Compilation message

selling_rna.cpp: In function 'void file()':
selling_rna.cpp:35:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         freopen(TASK".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
selling_rna.cpp:36:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         freopen(TASK".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6228 KB Output is correct
2 Correct 4 ms 6252 KB Output is correct
3 Correct 5 ms 6228 KB Output is correct
4 Correct 5 ms 6228 KB Output is correct
5 Correct 4 ms 6228 KB Output is correct
6 Correct 4 ms 6228 KB Output is correct
7 Correct 4 ms 6192 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 389 ms 571544 KB Output is correct
2 Correct 399 ms 542148 KB Output is correct
3 Correct 338 ms 514408 KB Output is correct
4 Correct 347 ms 490376 KB Output is correct
5 Correct 484 ms 660408 KB Output is correct
6 Correct 487 ms 669808 KB Output is correct
7 Correct 91 ms 23028 KB Output is correct
8 Correct 362 ms 401984 KB Output is correct
9 Correct 308 ms 340052 KB Output is correct
10 Correct 274 ms 330812 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 22 ms 17480 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6228 KB Output is correct
2 Correct 4 ms 6252 KB Output is correct
3 Correct 5 ms 6228 KB Output is correct
4 Correct 5 ms 6228 KB Output is correct
5 Correct 4 ms 6228 KB Output is correct
6 Correct 4 ms 6228 KB Output is correct
7 Correct 4 ms 6192 KB Output is correct
8 Correct 389 ms 571544 KB Output is correct
9 Correct 399 ms 542148 KB Output is correct
10 Correct 338 ms 514408 KB Output is correct
11 Correct 347 ms 490376 KB Output is correct
12 Correct 484 ms 660408 KB Output is correct
13 Correct 487 ms 669808 KB Output is correct
14 Correct 91 ms 23028 KB Output is correct
15 Correct 362 ms 401984 KB Output is correct
16 Correct 308 ms 340052 KB Output is correct
17 Correct 274 ms 330812 KB Output is correct
18 Runtime error 22 ms 17480 KB Execution killed with signal 11
19 Halted 0 ms 0 KB -