oj.uz

Submission #1071773

# Submission time Handle Problem Language Result Execution time Memory
1071773 2024-08-23T11:06:21 Z jer033 COVID tests (CEOI24_covid) C++17
58.5 / 100
 5598 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(83);
            else if (P < 0.03)
                work(18);
            else if (P < 0.05)
                work(12);
            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 45 ms 344 KB Output is correct
2 Correct 35 ms 344 KB Output is correct
3 Correct 34 ms 344 KB Output is correct
4 Correct 56 ms 344 KB Output is correct
5 Correct 38 ms 344 KB Output is correct
6 Correct 56 ms 344 KB Output is correct
7 Correct 54 ms 344 KB Output is correct
8 Correct 57 ms 344 KB Output is correct
9 Correct 35 ms 344 KB Output is correct
10 Correct 59 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 53 ms 344 KB Output is correct
14 Correct 33 ms 344 KB Output is correct
15 Correct 38 ms 344 KB Output is correct
16 Correct 56 ms 344 KB Output is correct
17 Correct 57 ms 344 KB Output is correct

Subtask #2
48.500000001 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 155 ms 340 KB Output is correct (P=0.001, F=15.1, Q=13.9) -> 90.00 points
2 Correct 484 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=59.9) -> 53.29 points
3 Correct 955 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=115.2) -> 48.50 points
4 Correct 1774 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=227.7) -> 51.25 points
5 Correct 2133 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=293.0) -> 51.18 points
6 Correct 3022 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=407.2) -> 62.16 points
7 Correct 3894 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=541.0) -> 63.67 points
8 Correct 5218 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=671.0) -> 75.02 points
9 Correct 5598 ms 344 KB Output is correct (P=0.2, F=731.4, Q=781.6) -> 70.61 points