oj.uz

Submission #1071700

# Submission time Handle Problem Language Result Execution time Memory
1071700 2024-08-23T10:11:01 Z jer033 COVID tests (CEOI24_covid) C++17
58.61 / 100
 5235 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(90);
            else if (P < 0.03)
                work(19);
            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(2);
            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 1 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 39 ms 344 KB Output is correct
2 Correct 57 ms 340 KB Output is correct
3 Correct 58 ms 344 KB Output is correct
4 Correct 39 ms 344 KB Output is correct
5 Correct 38 ms 340 KB Output is correct
6 Correct 47 ms 344 KB Output is correct
7 Correct 44 ms 344 KB Output is correct
8 Correct 33 ms 344 KB Output is correct
9 Correct 60 ms 344 KB Output is correct
10 Correct 32 ms 344 KB Output is correct
11 Correct 40 ms 344 KB Output is correct
12 Correct 43 ms 344 KB Output is correct
13 Correct 32 ms 344 KB Output is correct
14 Correct 33 ms 344 KB Output is correct
15 Correct 55 ms 344 KB Output is correct
16 Correct 44 ms 344 KB Output is correct
17 Correct 59 ms 344 KB Output is correct

Subtask #2
48.609999999 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 121 ms 344 KB Output is correct (P=0.001, F=15.1, Q=13.9) -> 90.00 points
2 Correct 437 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=59.9) -> 53.29 points
3 Correct 784 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=115.1) -> 48.61 points
4 Correct 1559 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=228.7) -> 50.65 points
5 Correct 1982 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=293.6) -> 50.90 points
6 Correct 2726 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=407.2) -> 62.16 points
7 Correct 3562 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=541.0) -> 63.67 points
8 Correct 4853 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=723.8) -> 58.82 points
9 Correct 5235 ms 344 KB Output is correct (P=0.2, F=731.4, Q=781.6) -> 70.61 points