Submission #667251

#	Time	Username	Problem	Language	Result	Execution time	Memory
667251		Darren0724	Inside information (BOI21_servers)	C++17	2.50 / 100	228 ms	524288 KiB

servers

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(),x.end()
const int INF=1e18;
const int mod=1e9+7;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,q;cin>>n>>q;
    q=n+q-1;
    vector<bitset<120000>> v(n);
    for(int i=0;i<n;i++){
        v[i][i]=1;
    }
    for(int i=0;i<q;i++){
        char c;cin>>c;
        if(c=='S'){
            int a,b;cin>>a>>b;a--;b--;
            v[a]|=v[b];
            v[b]=v[a];
        }
        if(c=='Q'){
            int a,b;cin>>a>>b;a--;b--;
            if(v[a][b]){
                cout<<"yes"<<endl;
            }
            else{
                cout<<"no"<<endl;
            }
        }
        if(c=='C'){
            int p;cin>>p;p--;
            cout<<0<<endl;
        }
    }

    return 0;
}

• Subtask 1: 2.5 / 2.5
• Subtask 2: 0 / 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