Submission #1107850

#	Time	Username	Problem	Language	Result	Execution time	Memory
1107850		matu	parentrises (BOI18_parentrises)	C++17	50 / 100	41 ms	10264 KiB

parentrises

#include <bits/stdc++.h>
// #include <tr2/dynamic_bitset>
 
using namespace std;
// using namespace tr2;
#pragma GCC optimize("O3,unroll-loops,Ofast")
//#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
const long double eps = 1e-9;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int randgen(int left, int right) {
    return uniform_int_distribution<int>(left, right)(rng);
}
long long randgenll(long long left, long long right) {
    return uniform_int_distribution<long long>(left, right)(rng);
}
 
typedef long long ll;
typedef long double ld;
const int mod = 1e9 + 7;
struct Mint
{
    int val;
    Mint(int x = 0)
    {
        val = x % mod;
    }
    Mint(long long x)
    {
        val = x % mod;
    }
    Mint operator+(Mint oth)
    {
        return val + oth.val;
    }
    Mint operator*(Mint oth)
    {
        return 1LL * val * oth.val;
    }
    Mint operator-(Mint oth)
    {
        return val - oth.val + mod;
    }
    Mint fp(Mint a, long long n){
        Mint p = 1;
        while(n){
            if(n & 1){
                p = p * a;
            }
            a = a * a;
            n /= 2;
        }
        return p;
    }
    Mint operator/(Mint oth){
        Mint invers = fp(oth, mod - 2);
        return 1LL * val * invers.val;
    }
    friend ostream& operator << (ostream& os, const Mint& lol){
        os << lol.val;
        return os;
    }
};
 
struct AINT{
    vector<pair<ll,Mint>> aint;
    vector<pair<ll,Mint>> lazy;
    pair<ll,Mint> b;
    AINT(int n){
        b = {1e18,Mint(0)};
        aint.assign(n * 4 + 1,make_pair(1e18,Mint(0)));
        lazy.assign(n * 4 + 1, make_pair(1e18, Mint(0)));
    }
    void update(int v, int tl, int tr, int l, int r, pair<ll,Mint> val){
        if(lazy[v].first != 1e18){
            if(aint[v].first == lazy[v].first){
                aint[v].second = aint[v].second + lazy[v].second;
            }else if(aint[v].first > lazy[v].first) aint[v] = lazy[v];
 
            if(tl != tr){
                if(lazy[v * 2].first == lazy[v].first){
                    lazy[v * 2].second = lazy[v *  2].second + lazy[v].second;
                }else if(lazy[v * 2].first > lazy[v].first) lazy[v * 2] = lazy[v];
                
 
                if(lazy[v * 2 + 1].first == lazy[v].first){
                    lazy[v * 2 + 1].second = lazy[v * 2 + 1].second + lazy[v].second;
                }else if(lazy[v * 2 + 1].first > lazy[v].first){
                    lazy[v * 2 + 1] = lazy[v];
                }
            }
            lazy[v] = b;
        }
        if(l <= tl && r >= tr){
            if(aint[v].first == val.first){
                aint[v].second = aint[v].second + val.second;
            }else if(aint[v].first > val.first){
                    aint[v] = val;
            }
 
            if(tl != tr){
                if(lazy[v * 2].first == val.first){
                    lazy[v * 2].second = lazy[v *  2].second + val.second;
                }else if(lazy[v * 2].first > val.first){
                    lazy[v * 2] = val;
                }
                
 
                if(lazy[v * 2 + 1].first == val.first){
                    lazy[v * 2 + 1].second = lazy[v * 2 + 1].second + val.second;
                }else if(lazy[v * 2 + 1].first > val.first){
                    lazy[v * 2 + 1] = val;
                }
            }
            return;
        }
        if(l > tr || r < tl) return;
        int tm = (tl + tr) / 2;
        update(v * 2, tl, tm, l,r , val);
        update(v * 2 + 1, tm + 1, tr, l, r, val);
        
        if(aint[v * 2].first == aint[v * 2 + 1].first){
            aint[v] = aint[v * 2];
            aint[v].second = aint[v].second + aint[v * 2 + 1].second;
        }else{
            if(aint[v * 2].first < aint[v * 2 + 1].first) aint[v] = aint[v * 2];
            else aint[v] = aint[v * 2 + 1];
        }
 
 
    }
    pair<ll,Mint> query(int v, int tl, int tr, int l, int r){
        if(lazy[v].first != 1e18){
            if(aint[v].first == lazy[v].first){
                aint[v].second = aint[v].second + lazy[v].second;
            }else if(aint[v].first > lazy[v].first) aint[v] = lazy[v];
 
            if(tl != tr){
                if(lazy[v * 2].first == lazy[v].first){
                    lazy[v * 2].second = lazy[v *  2].second + lazy[v].second;
                }else if(lazy[v * 2].first > lazy[v].first) lazy[v * 2] = lazy[v];
                
 
                if(lazy[v * 2 + 1].first == lazy[v].first){
                    lazy[v * 2 + 1].second = lazy[v * 2 + 1].second + lazy[v].second;
                }else if(lazy[v * 2 + 1].first > lazy[v].first){
                    lazy[v * 2 + 1] = lazy[v];
                }
            }
            lazy[v] = b;
        }
        if(l <= tl && r >= tr) return aint[v];
        if(l > tr || r < tl) return make_pair(1e18,Mint(0));
        int tm = (tl + tr) / 2;
        pair<ll,Mint> p1 = query(v * 2, tl ,tm, l, r);
        pair<ll,Mint> p2 = query(v * 2 + 1, tm + 1, tr, l,r);
        if(p1.first == p2.first){
            p1.second = p1.second + p2.second;
            return p1;
        }else if(p1.first < p2.first) return p1;
        return p2;
 
        // int tm = (tl + tr) / 2;
        // if(l <= tl && r >= tr) return aint[v];
        // if(l > tr || r < tl) return 0;
        // return max(query(v * 2, tl, tm,l,r), query(v * 2 + 1, tm + 1, tr, l,r));
        
    }
};
struct AIB{
    vector<int> aib;
    AIB(int n){
        aib.assign(n + 1,0);
    
    }
    void update(int pos, int val){
        for(; pos < aib.size(); pos += (pos & -pos)){
            aib[pos] += val;
        }
    }
    int query(int pos){
        int pl = 0;
   
        for(; pos > 0; pos -= (pos & -pos)) pl += aib[pos];
        return pl;
    }
};
 
int red = 1;
int c;
int ______________________________________________________________________________________________________________________________________________;
 
void solve(){
    if(c == 1){
        string s;
        cin >> s;
        int n = s.size();
        s = '.' + s;
        vector<int> stiva;
        vector<int> color(n + 1);
        for(int i = 1; i <= n; i++){
            if(s[i] == ')'){
                if(stiva.size() == 0){
                    color[i] = 2;
                }else{
                    color[i] = 1;
                    stiva.pop_back();
                }
            }else{
                color[i] =1 ;
                stiva.push_back(i);
            }
        }
        if(stiva.size()){
            for(auto i : stiva){
                color[i] = 2;
            }
        }
        stiva.clear();
        vector<int> stiva1;
        for(int i = 1; i <= n; i++){
            if(s[i] == ')'){
                if(color[i] == 2){
                    if(stiva.size()){
                        color[stiva.back()] = 3;
                        stiva.pop_back();
                    }else{
                        cout << "impossible" << '\n';
                        return;
                    }
                }else{
                    if(stiva1.size()){
                        color[i] =3;
                        stiva1.pop_back();
                    }
                }
                
            }else{
                if(color[i] == 2){
                    stiva1.push_back(i);
                }else{
                    stiva.push_back(i);
                }
            }
        }
        if(stiva1.size()){
            cout << "impossible" << '\n';
            return;
        }

        for(int i = 1; i <= n; i++){
            if(color[i] == 1){
                cout << 'R';
            }else if(color[i] == 2){
                cout << 'B';
            }else cout << 'G';
        }
        cout << '\n';
    }else{

    }
}
int32_t main(){
    cin.tie(0)->sync_with_stdio(0);
    cin >> c;
    int t = 1; 
    if(red) cin >> t;
   
    while(t--){
        solve();
    }
 
 
}
 
 
/*
 
2 2 2 2 4
1 3 5
 
 
1 30
1 40
120 2 
2 430
100 3 
3 30
100 4 
4 490
100 5 
5 440
40 6 
6 290
50 7 
7 190
290 8 
8 430
50 9 
9 60
190 10 
10 490
 
10
4 10 2
1 2 21
1 3 13
6 7 1
7 9 5
2 4 3
2 5 8
1 6 55
6 8 34
*/

Compilation message (stderr)

parentrises.cpp: In member function 'void AIB::update(int, int)':
parentrises.cpp:176:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  176 |         for(; pos < aib.size(); pos += (pos & -pos)){
      |               ~~~~^~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 11 / 11
• Subtask 3: 6 / 6
• Subtask 4: 28 / 28
• Subtask 5: 0 / 6
• Subtask 6: 0 / 16
• Subtask 7: 0 / 28