oj.uz

Submission #476371

# Submission time Handle Problem Language Result Execution time Memory
476371 2021-09-26T08:30:08 Z nicolaalexandra Selling RNA Strands (JOI16_selling_rna) C++14
100 / 100
 732 ms 642240 KB 
#include <bits/stdc++.h>
#define DIM 100010
#define INF 2000000000
using namespace std;

vector <char> s[DIM];
char p[DIM],q[DIM],w[DIM],a[DIM];
int poz[DIM],lg[DIM];
int n,m,i,j,l,r,sol;


struct trie{
    int l,r;
    trie *f[27];
    trie(){
        l = INF, r = 0;
        for (int i=0;i<26;i++)
            f[i] = 0;
    }
};

trie *rad1 = new trie;


struct trie2{
    vector <int> v;
    trie2 *f[27];
    trie2(){
        for (int i=0;i<26;i++)
            f[i] = 0;
    }
};

trie2 *rad2 = new trie2;


void add (trie *rad, char *s){
    if (*s == NULL){
        rad->l = min (rad->l,i);
        rad->r = max (rad->r,i);
        //rad->l = rad->r = i;
    } else {
        if (rad->f[*s-'A'] == 0)
            rad->f[*s-'A'] = new trie;

        add (rad->f[*s-'A'],s+1);

    }
}

void dfs (trie *rad){
    if (rad == NULL)
        return;
    for (int i=0;i<26;i++){
        if (rad->f[i]){
            dfs (rad->f[i]);
            rad->l = min (rad->l,rad->f[i]->l);
            rad->r = max (rad->r,rad->f[i]->r);
        }
    }
}

void dfs2 (trie2 *rad){
    if (rad == NULL)
        return;

    sort (rad->v.begin(),rad->v.end());

    for (int i=0;i<26;i++)
        if (rad->f[i])
            dfs2 (rad->f[i]);
}


void add2 (trie2 *rad, char *s){
    rad->v.push_back(i);
    if (*s == NULL){
        return;
    } else {
        if (rad->f[*s-'A'] == NULL)
            rad->f[*s-'A'] = new trie2;

        add2 (rad->f[*s-'A'],s+1);
    }
}

void query (trie *rad, char *s){
    if (*s == NULL)
        l = rad->l, r = rad->r;
    else {

        if (rad->f[*s-'A'] == NULL)
            return;

        query (rad->f[*s-'A'],s+1);
    }

}

void query2 (trie2 *rad, char *s){
    if (*s == NULL){

        /// cate elemente din vectoru asta sunt intre l si r

        vector <int> :: iterator it = lower_bound(rad->v.begin(),rad->v.end(),l);

        if (it == rad->v.end())
            return;

        vector <int> :: iterator it2 = upper_bound(rad->v.begin(),rad->v.end(),r);
        it2--;

        sol = it2 - it + 1;

        /*for (int i=0;i<rad->v.size();i++)
            if (rad->v[i] >= l && rad->v[i] <= r)
                sol++;
        */

        return;
    } else {
        if (rad->f[*s-'A'] == NULL)
            return;

        query2 (rad->f[*s-'A'],s+1);
    }
}


inline int cmp (int a, int b){

    for (int i=0;i<min(lg[a],lg[b]);i++)
        if (s[a][i] != s[b][i])
            return s[a][i] < s[b][i];

    return lg[a] < lg[b];

}

void copiere (char w[], vector<char> v){
    for (int i=0;i<v.size();i++)
        w[i] = v[i];
    w[v.size()] = NULL;
}

int main (){

    //ifstream cin ("date.in");
    //ofstream cout ("date.out");

    cin>>n>>m;
    for (i=1;i<=n;i++){
        cin>>a;
        lg[i] = strlen(a);

        for (j=0;j<lg[i];j++)
            s[i].push_back(a[j]);

        poz[i] = i;
    }

    sort (poz+1,poz+n+1,cmp);

    for (i=1;i<=n;i++){
        copiere (w,s[poz[i]]);
        add (rad1,w);
    }

    dfs (rad1);


    for (i=1;i<=n;i++){
        reverse (s[poz[i]].begin(),s[poz[i]].end());
        copiere (w,s[poz[i]]);
        add2 (rad2,w);
    }

    dfs2 (rad2);


    for (;m--;){

        cin>>p>>q;

        l = r = 0;
        query(rad1,p);
        if (!l){
            cout<<"0\n";
            continue;
        }

        reverse (q,q+strlen(q));
        sol = 0;
        query2 (rad2,q);

        cout<<sol<<"\n";
    }

    return 0;
}

Compilation message

selling_rna.cpp: In function 'void add(trie*, char*)':
selling_rna.cpp:38:15: warning: NULL used in arithmetic [-Wpointer-arith]
   38 |     if (*s == NULL){
      |               ^~~~
selling_rna.cpp: In function 'void add2(trie2*, char*)':
selling_rna.cpp:77:15: warning: NULL used in arithmetic [-Wpointer-arith]
   77 |     if (*s == NULL){
      |               ^~~~
selling_rna.cpp: In function 'void query(trie*, char*)':
selling_rna.cpp:88:15: warning: NULL used in arithmetic [-Wpointer-arith]
   88 |     if (*s == NULL)
      |               ^~~~
selling_rna.cpp: In function 'void query2(trie2*, char*)':
selling_rna.cpp:101:15: warning: NULL used in arithmetic [-Wpointer-arith]
  101 |     if (*s == NULL){
      |               ^~~~
selling_rna.cpp: In function 'void copiere(char*, std::vector<char>)':
selling_rna.cpp:141:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  141 |     for (int i=0;i<v.size();i++)
      |                  ~^~~~~~~~~
selling_rna.cpp:143:19: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null]
  143 |     w[v.size()] = NULL;
      |                   ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 620 ms 560764 KB Output is correct
2 Correct 593 ms 530936 KB Output is correct
3 Correct 547 ms 473204 KB Output is correct
4 Correct 510 ms 450584 KB Output is correct
5 Correct 674 ms 632764 KB Output is correct
6 Correct 698 ms 642240 KB Output is correct
7 Correct 209 ms 14200 KB Output is correct
8 Correct 732 ms 379800 KB Output is correct
9 Correct 572 ms 319832 KB Output is correct
10 Correct 480 ms 310692 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 5672 KB Output is correct
2 Correct 82 ms 6192 KB Output is correct
3 Correct 110 ms 6192 KB Output is correct
4 Correct 90 ms 5156 KB Output is correct
5 Correct 106 ms 6240 KB Output is correct
6 Correct 101 ms 6112 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 620 ms 560764 KB Output is correct
9 Correct 593 ms 530936 KB Output is correct
10 Correct 547 ms 473204 KB Output is correct
11 Correct 510 ms 450584 KB Output is correct
12 Correct 674 ms 632764 KB Output is correct
13 Correct 698 ms 642240 KB Output is correct
14 Correct 209 ms 14200 KB Output is correct
15 Correct 732 ms 379800 KB Output is correct
16 Correct 572 ms 319832 KB Output is correct
17 Correct 480 ms 310692 KB Output is correct
18 Correct 133 ms 5672 KB Output is correct
19 Correct 82 ms 6192 KB Output is correct
20 Correct 110 ms 6192 KB Output is correct
21 Correct 90 ms 5156 KB Output is correct
22 Correct 106 ms 6240 KB Output is correct
23 Correct 101 ms 6112 KB Output is correct
24 Correct 591 ms 462656 KB Output is correct
25 Correct 629 ms 462804 KB Output is correct
26 Correct 558 ms 457364 KB Output is correct
27 Correct 498 ms 392608 KB Output is correct
28 Correct 550 ms 80444 KB Output is correct
29 Correct 435 ms 15416 KB Output is correct