제출 #1345241

#제출 시각아이디문제언어결과실행 시간메모리
1345241thelegendary08COVID tests (CEOI24_covid)C++17
78.25 / 100
7027 ms428 KiB
#include<bits/stdc++.h>
#define int long long
#define f0r(i,n) for(int i = 0; i < n; i++)
#define FOR(i,k,n) for(int i = k; i < n; i++)
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define F first
#define S second
#define vi vector<int>
#define pii pair<int,int>
#define dout(x) cout<<x<<' '<<#x<<endl
#define dout2(x,y) cout<<x<<' '<<#x<<' '<<y<<' '<<#y<<endl
#define vout(v) cout<<#v<<": "; for(auto u : v)cout<<u<<' '; cout<<endl
using namespace std;
int n,t; double p;
const double prob = 0.5;
mt19937 rng(1911);
vi perm;
bool ask(int l, int r){
	string s(n,'0'); FOR(i,l,r+1)s[perm[i]]='1'; cout<<"Q "<<s<<endl; char c; cin>>c; return c == 'P';
}

signed main(){
	cin>>n>>p>>t; while(t--){
		perm.clear(); f0r(i,n)perm.pb(i); shuffle(perm.begin(), perm.end(), rng); vector<bool> ans(n);
		if(false){
			f0r(i,n)ans[i] = ask(i,i);
		}
		else{
			double cur = 1, mn = 1e9; int l = 0; f0r(i,1000){
				cur *= (1-p); if(abs((1-cur) - prob) < mn)mn = abs((1-cur) - prob), l = i;
			}
			int pv = -1; while(pv < n-1){
				int lo = pv + 1, hi = min(pv + l, n - 1); bool ret = ask(lo, hi); if(!ret)pv = hi; else{
					while(lo < hi){
						int mid = lo + (hi - lo) / 2; bool ret = ask(pv + 1, mid); if(ret)hi=mid; else lo = mid + 1;
					}
					ans[lo] = 1, pv = lo;
				}
			}
		}
		string as(n,'0'); f0r(i,n)if(ans[i])as[perm[i]]='1';
		cout<<"A "<<as<<endl; char ver; cin>>ver; if(ver=='W'){return 0;}
	}
}
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