Submission #863570

#	Time	Username	Problem	Language	Result	Execution time	Memory
863570		HossamHero7	Inside information (BOI21_servers)	C++14	2.50 / 100	81 ms	524288 KiB

servers

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
bitset<120001> vis[120001];
void solve(){
    int n,q;
    cin>>n>>q;
    for(int i=0;i<n;i++) vis[i][i] = 1; 
    vector<int> cnt(n+1,1);
    for(int qq=0;qq<n+q-1;qq++){
        char c;
        int a,b;
        cin>>c>>a;
        a --;
        if(c != 'C') cin>>b, b--;
        if(c == 'S'){
            vis[a] |= vis[b];
            vis[b] = vis[a];
        }
        else cout<<(vis[a][b] ? "yes" : "no")<<endl;
    }
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);      cout.tie(0);
    int t=1;
    //cin>>t;
    while(t--){
        solve();
    }
    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