oj.uz

Submission #1071775

# Submission time Handle Problem Language Result Execution time Memory
1071775 2024-08-23T11:07:59 Z jer033 COVID tests (CEOI24_covid) C++17
59.74 / 100
 5383 ms 344 KB 
#include <bits/stdc++.h>
using namespace std;

vector<bool> answer(1000, 0);

void answer_clear()
{
    for (int i=0; i<1000; i++)
        answer[i] = 0;
}

bool ask_query(vector<bool> a)
{
    cout << "Q ";
    for (int i=0; i<1000; i++)
        cout << a[i];
    cout << '\n';
    cout.flush();
    char x;
    cin >> x;
    if (x=='P')
        return 1;
    return 0;
}

bool ask_query2(int x, int y)
{
    cout << "Q ";
    for (int i=0; i<x; i++)
        cout << '0';
    for (int i=x; i<=y; i++)
        cout << '1';
    for (int i=y+1; i<1000; i++)
        cout << '0';
    cout << endl;
    char k;
    cin >> k;
    if (k=='P')
        return 1;
    return 0;
}

bool report(vector<bool> a)
{
    cout << "A ";
    for (int i=0; i<1000; i++)
        cout << a[i];
    cout << '\n';
    cout.flush();
    char x;
    cin >> x;
    if (x=='C')
        return 1;
    return 0;
}

long double prob;

bool range_query(int x, int y, bool known)
{
    bool response;
    if (known==1)
        response = 1;
    else
        response = ask_query2(x, y);
    if (response==1)
    {
        if (x==y)
            answer[x] = 1;
        else
        {
            int z = (x+y)/2;
            bool a = range_query(x, z, 0);
            if (a==0)
                range_query(z+1, y, 1);
            else
                range_query(z+1, y, 0);
        }
        return 1;
    }
    return 0;
}

void work(int m)
{
    int curr = 0;
    bool go_on = 1;
    while (go_on)
    {
        range_query(curr, min(curr+m-1, 999), 0);
        if ((curr+m-1)>=999)
            go_on = 0;
        curr+=m;
    }
}

int main()
{
    std::ios::sync_with_stdio(false);
    int N, T;
    long double P;
    cin >> N >> P >> T;
    if (T==1)
    {
        while (T--)
        {
            vector<bool> query(N, 0);
            vector<bool> ans(N, 0);
            for (int i=0; i<N; i++)
            {
                query[i] = 1;
                ans[i] = ask_query(query);
                query[i] = 0;
            }
            bool L = report(ans);
            if (L==0)
                T = 0;
        }
    }
    else
    {
        prob = P;
        while (T--)
        {
            answer_clear();
            if (P < 0.005)
                work(1000);
            else if (P < 0.01)
                work(200);
            else if (P < 0.02)
                work(100);
            else if (P < 0.03)
                work(18);
            else if (P < 0.05)
                work(13);
            else if (P < 0.10)
                work(8);
            else if (P < 0.15)
                work(4);
            else if (P < 0.19)
                work(4);
            else
                work(2);
            bool L = report(answer);
            if (L==0)
                T = 0;
        }
    }
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 344 KB Execution killed with signal 13
2 Halted 0 ms 0 KB -

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 344 KB Output is correct
2 Correct 51 ms 344 KB Output is correct
3 Correct 47 ms 344 KB Output is correct
4 Correct 33 ms 344 KB Output is correct
5 Correct 53 ms 344 KB Output is correct
6 Correct 37 ms 344 KB Output is correct
7 Correct 33 ms 344 KB Output is correct
8 Correct 41 ms 344 KB Output is correct
9 Correct 32 ms 344 KB Output is correct
10 Correct 35 ms 344 KB Output is correct
11 Correct 57 ms 344 KB Output is correct
12 Correct 37 ms 344 KB Output is correct
13 Correct 34 ms 340 KB Output is correct
14 Correct 33 ms 344 KB Output is correct
15 Correct 33 ms 344 KB Output is correct
16 Correct 34 ms 344 KB Output is correct
17 Correct 33 ms 344 KB Output is correct

Subtask #2
49.740000003 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 344 KB Output is correct (P=0.001, F=15.1, Q=13.9) -> 90.00 points
2 Correct 405 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=59.9) -> 53.29 points
3 Correct 773 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=114.1) -> 49.74 points
4 Correct 1511 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=227.7) -> 51.25 points
5 Correct 2040 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=293.6) -> 50.90 points
6 Correct 2782 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=407.2) -> 62.16 points
7 Correct 3631 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=541.0) -> 63.67 points
8 Correct 4506 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=671.0) -> 75.02 points
9 Correct 5383 ms 344 KB Output is correct (P=0.2, F=731.4, Q=781.6) -> 70.61 points