oj.uz

Submission #1071502

# Submission time Handle Problem Language Result Execution time Memory
1071502 2024-08-23T07:54:44 Z jer033 COVID tests (CEOI24_covid) C++17
59.4 / 100
 5421 ms 596 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;
}

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
    {
        while (T--)
        {
            answer_clear();
            if (P < 0.005)
                work(1000);
            else if (P < 0.01)
                work(334);
            else if (P < 0.02)
                work(45);
            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(5);
            else if (P < 0.19)
                work(4);
            else
                work(3);
            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 41 ms 340 KB Output is correct
3 Correct 49 ms 596 KB Output is correct
4 Correct 33 ms 344 KB Output is correct
5 Correct 33 ms 344 KB Output is correct
6 Correct 40 ms 344 KB Output is correct
7 Correct 61 ms 344 KB Output is correct
8 Correct 34 ms 344 KB Output is correct
9 Correct 35 ms 344 KB Output is correct
10 Correct 33 ms 344 KB Output is correct
11 Correct 35 ms 344 KB Output is correct
12 Correct 39 ms 596 KB Output is correct
13 Correct 44 ms 344 KB Output is correct
14 Correct 34 ms 344 KB Output is correct
15 Correct 48 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
49.400000001 / 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 443 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=60.6) -> 51.62 points
3 Correct 830 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=114.4) -> 49.40 points
4 Correct 1580 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=227.7) -> 51.25 points
5 Correct 1976 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=293.0) -> 51.18 points
6 Correct 2841 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=407.2) -> 62.16 points
7 Correct 3951 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=559.9) -> 57.40 points
8 Correct 4439 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=671.0) -> 75.02 points
9 Correct 5421 ms 344 KB Output is correct (P=0.2, F=731.4, Q=804.1) -> 64.40 points