Submission #1101569

#	Time	Username	Problem	Language	Result	Execution time	Memory
1101569		Mighilon	COVID tests (CEOI24_covid)	C++17	52.27 / 100	2405 ms	508 KiB

Main

#include <bits/stdc++.h>
using namespace std;
 
#ifdef DEBUG
#include "../Library/debug.h"
#else
#define dbg(x...)
#endif
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl; 
 
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define F0R(i, a) for (int i = 0; i < (a); ++i)
#define FORd(i, a, b) for (int i = (b) - 1; i >= (a); --i)
#define F0Rd(i, a) for (int i = (a) - 1; i >= 0; --i)
#define trav(a, x) for (auto& a : x)
#define f first 
#define s second
#define pb push_back
#define sz(x) (int)(x).size()
#define all(x) x.begin(), x.end()
 
const char nl = '\n';
const int INF = 1e9;
const int MOD = 1e9 + 7;
 
int n;
double p;
vector<bool> ans;

bool ask(int l, int r){
    cout<<"Q ";
    string s(n,'0');
    FOR(i,l,r+1)
        s[i]='1';
    cout<<s;
    cout<<endl;
    char ans;
    cin>>ans;
    return ans=='P';
}

void f(int l, int r){
    int m=(l+r)/2;
    bool b1=ask(l,m);
    dbg(l,r,m,b1)
    if(b1&&l==m){
        ans[l]=1;
    }
    else if(b1){
        f(l,m);
    }
    else if(!b1&&r==m+1){
        ans[r]=1;
        return;
    }
    else{
        f(m+1,r);
        return;
    }
    bool b2=ask(m+1,r);
    dbg(b2)
    if(b2&&m+1==r){
        ans[r]=1;
    }
    else if(b2){
        f(m+1,r);
    }
}

void solve(){
    if(ask(0,n-1))
        f(0,n-1);
    cout<<"A ";
    F0R(i,n)
        cout<<ans[i];
    cout<<endl;
    char c;
    cin>>c;
}
 
int32_t main(){
    ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    
    int TC = 1;
    // cin >> TC;
    cin>>n>>p>>TC;
    ans.resize(n);
    while(TC--){
        ans.assign(n,0);
        solve();
    }
    return 0;
}

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 42.270000003 / 90