oj.uz

Submission #1071777

# Submission time Handle Problem Language Result Execution time Memory
1071777 2024-08-23T11:09:45 Z jer033 COVID tests (CEOI24_covid) C++17
60.45 / 100
 5139 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(125);
            else if (P < 0.03)
                work(25);
            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 33 ms 344 KB Output is correct
2 Correct 34 ms 344 KB Output is correct
3 Correct 35 ms 344 KB Output is correct
4 Correct 50 ms 344 KB Output is correct
5 Correct 36 ms 344 KB Output is correct
6 Correct 35 ms 344 KB Output is correct
7 Correct 49 ms 344 KB Output is correct
8 Correct 33 ms 344 KB Output is correct
9 Correct 33 ms 344 KB Output is correct
10 Correct 32 ms 344 KB Output is correct
11 Correct 39 ms 344 KB Output is correct
12 Correct 33 ms 344 KB Output is correct
13 Correct 33 ms 344 KB Output is correct
14 Correct 33 ms 344 KB Output is correct
15 Correct 32 ms 344 KB Output is correct
16 Correct 33 ms 344 KB Output is correct
17 Correct 33 ms 344 KB Output is correct

Subtask #2
50.450000004 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 340 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 761 ms 340 KB Output is correct (P=0.011546, F=94.9, Q=113.5) -> 50.45 points
4 Correct 1518 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=228.2) -> 50.95 points
5 Correct 1947 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=293.6) -> 50.90 points
6 Correct 2684 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=407.2) -> 62.16 points
7 Correct 3468 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=541.0) -> 63.67 points
8 Correct 4367 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=671.0) -> 75.02 points
9 Correct 5139 ms 344 KB Output is correct (P=0.2, F=731.4, Q=781.6) -> 70.61 points