Submission #557529

#	Time	Username	Problem	Language	Result	Execution time	Memory
557529		Mounir	Inside information (BOI21_servers)	C++14	2.50 / 100	3561 ms	524288 KiB

servers

#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define sz(x) (int)x.size()
#define pb push_back
#define pii pair<int, int>
#define chmin(x, v) x = min(x, v)
#define chmax(x, v) x = max(x, v)
#define print(x) cout << #x << " est " << x << endl;
#define x first
#define y second
#define int long long
using namespace std;

const int N = 2e5;
set<int> datas[N];

signed main(){  
      int nServs, nReqs; cin >> nServs >> nReqs;
      for (int i = 1; i <= nServs; ++i)
            datas[i] = {i};
      nReqs += nServs - 1;
      while (nReqs--){
            char typeReq; cin >> typeReq;
            if (typeReq == 'S'){
                  int a, b; cin >> a >> b;
                  for (int e : datas[b])
                        datas[a].insert(e);
                  datas[b] = datas[a];
            }
            else if (typeReq == 'Q'){
                  int a, d; cin >> a >> d;
                  if (datas[a].count(d)) cout << "yes" << endl;
                  else cout << "no" << endl;
            }
            else {
                  int d; cin >> d;
                  int nb = 0;
                  for (int a = 1; a <= nServs; ++a)
                        nb += datas[a].count(d);
                  cout << nb << 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