제출 #863519

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
863519		HossamHero7	Inside information (BOI21_servers)	C++14	7.50 / 100	102 ms	2956 KiB

servers

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
void solve(){
    int n,q;
    cin>>n>>q;
    if(n <= 4000){
        vector<vector<bool>> vis(n+1,vector<bool>(n+1));
        for(int i=1;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;
            if(c != 'C') cin>>b;
            if(c == 'S'){
                for(int j=1;j<=n;j++){
                    cnt[j] += vis[a][j] ^ vis[b][j];
                    vis[a][j] = vis[a][j] | vis[b][j];
                }
                vis[b] = vis[a];
            }
            else if(c == 'C') cout<<cnt[a]<<endl;
            else cout<<(vis[a][b] ? "yes" : "no")<<endl;
        }
    }
    else {
        vector<bool> vis(n+1);
        vis[1] = 1;
        vector<int> idx(n+1);
        int cnt = 1;
        idx[1] = 0;
        for(int qq=0;qq<n+q-1;qq++){
            char c;
            int a,b;
            cin>>c>>a;
            if(c != 'C') cin>>b;
            if(c == 'S'){
                vis[max(a,b)] = 1;
                idx[max(a,b)] = cnt;
                cnt ++;
            }
            else if(c == 'C') cout<<cnt - idx[a] + (a != 1)<<endl;
            else {
                if(a == b) cout<<"yes"<<endl;
                else {
                    if(min(a,b) == 1 && vis[a] && vis[b]) cout<<"yes"<<endl;
                    else if(vis[a] && vis[b] && idx[a] > idx[b]) cout<<"yes"<<endl;
                    else cout<<"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: 2.5 / 2.5
• Subtask 3: 2.5 / 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