Submission #412601

#	Time	Username	Problem	Language	Result	Execution time	Memory
412601		cfalas	Inside information (BOI21_servers)	C++14	0 / 100	263 ms	640 KiB

servers

#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define INF 10000000
#define MOD 1000000007
#define MID ((l+r)/2)
#define HASHMOD 2305843009213693951
#define ll long long
#define ull unsigned long long
#define F first
#define S second
typedef pair<ll, ll> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef map<int, int> mii;

#define EPS 1e-6
#define FOR(i,n) for(int i=0;i<((int)(n));i++)
#define FORi(i,a,b) for(int i=((int)(a));i<((int)(b));i++)
#define FOA(v, a) for(auto v : a)

int t, n;
vi a, b;

int main(){
	int q;
	cin>>n>>q;
	q+=n-1;
	set<int> a;
	a.insert(1);
	while(q--){
		char s;
		cin>>s;
		if(s=='S'){
			int x, y;
			cin>>x>>y;
			if(x==1) swap(x,y);
			assert(y==1);
			a.insert(x);
		}
		else if(s=='Q'){
			int x, y;
			cin>>x>>y;
			if(x==y) cout<<"yes\n";
			else if(a.count(x) && a.count(y)) cout<<"yes\n";
			else cout<<"no\n";
		}
		else{
			int x;
			cin>>x;
			if(a.count(x)) cout<<a.size()<<endl;
			else cout<<1<<endl;
		}
	}
}

• Subtask 1: 0 / 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