Submission #772946

#	Time	Username	Problem	Language	Result	Execution time	Memory
772946		ZHIRDILBILDIZ	Inside information (BOI21_servers)	C++14	5 / 100	2241 ms	378804 KiB

servers

#include<bits/stdc++.h>
using namespace std ;
struct query
{
    char type ;
    int a, b ;
};
bool flag1 = 1 ;
int n, k ;
vector<query> v ;
signed main()
{
    ios_base::sync_with_stdio( 0 ) ;
    cin.tie( 0 ) ;
    cout.tie( 0 ) ;
    cin >> n >> k ;
    for(int i = 1 ; i < n + k ; i++)
    {
        query q ;
        cin >> q.type >> q.a ;
        if(q.type != 'C')cin >> q.b ;
        if(q.type == 'S' && q.a != 1 && q.b != 1)flag1 = 0 ;
        v.push_back(q) ;
    }
    if(n <= 4000)
    {
        set<int> s[n + 1] ;
        int kol[n + 1] = {} ;
        for(int i = 1 ; i <= n ; i++)
        {
            s[i].insert(i) ;
            kol[i] = 1 ;
        }
        for(query q : v)
        {
            if(q.type == 'S')
            {
                set<int> all ;
                for(int i : s[q.a])
                    all.insert(i) ;
                for(int i : s[q.b])
                    all.insert(i) ;
                for(int i : all)
                    if(!s[q.a].count(i) || !s[q.b].count(i))kol[i]++ ;
                s[q.a] = all ;
                s[q.b] = all ;
            }
            if(q.type == 'Q')
            {
                if(s[q.a].count(q.b))cout << "yes\n" ;
                else cout << "no\n" ;
            }
            if(q.type == 'C')
                cout << kol[q.a] << '\n' ;
        }
        return 0 ;
    }
    if(flag1)
    {
        int now = 1, ind[n + 1] = {} ;
        for(query q : v)
        {
            if(q.type == 'S')
            {
                if(!ind[q.a])
                    ind[q.a] = now ;
                if(!ind[q.b])
                    ind[q.b] = now ;
                now++ ;
            }
            if(q.type == 'Q')
            {
                if(ind[q.b] <= ind[q.a])cout << "yes\n" ;
                else cout << "no\n" ;
            }
            if(q.type == 'C')
                cout << now - ind[q.a] + 1 << '\n' ;
        }
    }
    return 0 ;
}
//6 9
//S 1 2
//S 1 3
//S 1 4
//Q 5 1
//S 1 5
//S 1 6
//Q 5 1
//Q 1 5
//C 1
//C 2
//C 3
//C 4
//C 5
//C 6

• Subtask 1: 2.5 / 2.5
• Subtask 2: 2.5 / 2.5
• Subtask 3: 0 / 2.5
• Subtask 4: 0 / 2.5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 5
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 12.5
• Subtask 10: 0 / 12.5
• Subtask 11: 0 / 17.5
• Subtask 12: 0 / 17.5