oj.uz

Submission #1073430

# Submission time Handle Problem Language Result Execution time Memory
1073430 2024-08-24T14:38:50 Z jer033 COVID tests (CEOI24_covid) C++17
84.3 / 100
 5074 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;
}

long double prob;

int range_first(int x, int y, bool known)
{
    if (x>y)
        return -5;
    bool response;
    if (known)
        response = 1;
    else
        response = ask_query2(x, y);
    
    if (response == 0)
        return -5;
    if (x==y)
    {
        answer[x] = 1;
        return x;
    }
    int z = (x+y)/2;
    int k = range_first(x, z, 0);
    if (k!=-5)
        return k;
    return range_first(z+1, y, 1);
}

void range_query(int x, int y)
{
    int currx = x;
    while (currx!=-4)
    {
        currx = range_first(currx, y, 0);
        currx++;
    }
}

void work(int m)
{
    int curr = 0;
    bool go_on = 1;
    while (go_on)
    {
        range_query(curr, min(curr+m-1, 999));
        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--)
        {
            work(1);
            bool L = report(answer);
            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(35);
            else if (P < 0.05)
                work(32);
            else if (P < 0.10)
                work(16);
            else if (P < 0.15)
                work(6);
            else if (P < 0.19)
                work(4);
            else
                work(4);
            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 19 ms 344 KB Output is correct
2 Correct 27 ms 344 KB Output is correct
3 Correct 30 ms 344 KB Output is correct
4 Correct 21 ms 344 KB Output is correct
5 Correct 19 ms 344 KB Output is correct
6 Correct 28 ms 344 KB Output is correct
7 Correct 20 ms 344 KB Output is correct
8 Correct 21 ms 344 KB Output is correct
9 Correct 26 ms 344 KB Output is correct
10 Correct 19 ms 344 KB Output is correct
11 Correct 19 ms 344 KB Output is correct
12 Correct 19 ms 344 KB Output is correct
13 Correct 19 ms 344 KB Output is correct
14 Correct 21 ms 344 KB Output is correct
15 Correct 19 ms 344 KB Output is correct
16 Correct 19 ms 344 KB Output is correct
17 Correct 32 ms 344 KB Output is correct

Subtask #2
74.300000004 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 80 ms 344 KB Output is correct (P=0.001, F=15.1, Q=10.7) -> 90.00 points
2 Correct 320 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=47.8) -> 90.00 points
3 Correct 652 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=94.8) -> 90.00 points
4 Correct 1377 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=195.9) -> 82.42 points
5 Correct 1785 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=257.3) -> 76.36 points
6 Correct 2589 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=383.3) -> 75.84 points
7 Correct 3649 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=516.2) -> 74.30 points
8 Correct 4389 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=655.6) -> 81.58 points
9 Correct 5074 ms 596 KB Output is correct (P=0.2, F=731.4, Q=758.3) -> 78.46 points