Submission #933300

#	Time	Username	Problem	Language	Result	Execution time	Memory
933300		parlimoos	Selling RNA Strands (JOI16_selling_rna)	C++14	100 / 100	491 ms	1009476 KiB

selling_rna

//Be Name KHODA
#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
#define pb push_back
#define pp pop_back
#define lb lower_bound
#define ub upper_bound
#define cl clear
#define bg begin
#define arr(x) array<int , x>
#define endl '\n'

struct nodel{
    nodel *ch[4] = {NULL , NULL , NULL , NULL};
    int time[2];
};
struct noder{
    noder *ch[4] = {NULL , NULL , NULL , NULL};
    vector<int> tms;
};

int n , m;
vector<string> a;
vector<string> ls , rs;
nodel tirel[10000001];
noder tirer[10000001];
int cntl = 0 , cntr = 0;
nodel *ais[100000];

int ch2int(char &e){
    if(e == 'A') return 0;
    if(e == 'U') return 1;
    if(e == 'G') return 2;
    return 3;
}
void addTirel(int inx){
    nodel *cur = &tirel[0];
    for(int i = 0 ; i < (int)a[inx].size() ; i++){
        int d = ch2int(a[inx][i]);
        if((cur -> ch)[d] == NULL) (cur -> ch)[d] = &tirel[++cntl];
        cur = (cur -> ch)[d];
    }
    ais[inx] = cur;
}
int timer = -1;
void dfsTirel(nodel *cur = &tirel[0]){
    (cur -> time)[0] = ++timer;
    for(int u = 0 ; u < 4 ; u++) if((cur -> ch)[u] != NULL) dfsTirel((cur -> ch)[u]);
    (cur -> time)[1] = timer;
}
void addTirer(int inx){
    noder *cur = &tirer[0];
    for(int i = (int)a[inx].size() - 1 ; i >= 0 ; i--){
        int d = ch2int(a[inx][i]);
        if((cur -> ch)[d] == NULL) (cur -> ch)[d] = &tirer[++cntr];
        cur = (cur -> ch)[d];
        (cur -> tms).pb((ais[inx] -> time)[0]);
    }
}
void drawTirer(){
    for(int i = 0 ; i <= cntr ; i++) sort((tirer[i].tms).bg() , (tirer[i].tms).end());
}
nodel *getTirel(int inx){
    nodel *cur = &tirel[0];
    for(int i = 0 ; i < (int)ls[inx].size() ; i++){
        int d = ch2int(ls[inx][i]);
        if((cur -> ch)[d] == NULL) return NULL;
        cur = (cur -> ch)[d];
    }
    return cur;
}
noder *getTirer(int inx){
    noder *cur = &tirer[0];
    for(int i = (int)rs[inx].size() - 1 ; i >= 0 ; i--){
        int d = ch2int(rs[inx][i]);
        if((cur -> ch)[d] == NULL) return NULL;
        cur = (cur -> ch)[d];
    }
    return cur;
}

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n >> m;
    for(int i = 0 ; i < n ; i++){
        string d;
        cin >> d;
        a.pb(d);
    }
    for(int i = 0 ; i < m ; i++){
        string l , r;
        cin >> l >> r;
        ls.pb(l) , rs.pb(r);
    }
    for(int i = 0 ; i < n ; i++) addTirel(i);
    dfsTirel();
    for(int i = 0 ; i < n ; i++) addTirer(i);
    drawTirer();
    for(int i = 0 ; i < m ; i++){
        auto itr1 = getTirel(i);
        auto itr2 = getTirer(i);
        if(itr1 == NULL or itr2 == NULL){
            cout << "0\n";
            continue;
        }
        int l = (itr1 -> time)[0] , r = (itr1 -> time)[1];
        int o = int(ub((itr2 -> tms).bg() , (itr2 -> tms).end() , r) - lb((itr2 -> tms).bg() , (itr2 -> tms).end() , l));
        cout << o << endl;
    }
}

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40