Submission #1038244

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1038244	2024-07-29 14:44:40	ttamx	COVID tests (CEOI24_covid)	C++17	95.55 / 100	1102 ms	424 KiB

Main

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#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int n,t,k;
double p;
string ans;
int ask(int l,int r){
    if(l>r)return false;
    string s(n,'0');
    for(int i=l;i<=r;i++)s[i]='1';
    cout << "Q " << s << endl;
    char res;
    cin >> res;
    return res=='P';
}
int solve(int l,int r){
    while(l<r){
        int m=(l+r)/2;
        if(ask(l,m))r=m;
        else l=m+1;
    }
    ans[l]='1';
    return l;
}
 
 
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• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 85.550000004 / 90