oj.uz

Submission #1073501

# Submission time Handle Problem Language Result Execution time Memory
1073501 2024-08-24T15:27:08 Z jer033 COVID tests (CEOI24_covid) C++17
90.5 / 100
 4726 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;

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;
    if (z>x)
        z--;
    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 m)
{
    int currx = x;
    int curry = y;
    while (currx!=-4)
    {
        currx = range_first(currx, curry, 0);
        currx++;
        if (currx!=-4)
        {
            curry = currx+m-1;
            curry = min(999, curry);
        }
    }
    if (curry!=999)
    {
        currx = curry+1;
        curry = currx+m-1;
        curry = min(999, curry);
        if (m<30)
            if ((curry + (m/2))>999)
                curry = 999;
        range_query(currx, curry, m);
    }
}

void work(int m)
{
    //int curr = 0;
    range_query(0, m-1, m);
    /*bool go_on = 1;
    while (go_on)
    {
        range_query(curr, min(curr+m-1, 999), m);
        if ((curr+m-1)>=999)
            go_on = 0;
        curr+=m;
    }*/
}

int main()
{
    std::ios::sync_with_stdio(false);
    cin.tie(NULL);
    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(30);
            else if (P < 0.05)
                work(16);
            else if (P < 0.10)
                work(13);
            else if (P < 0.15)
                work(8);
            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 29 ms 344 KB Output is correct
2 Correct 19 ms 344 KB Output is correct
3 Correct 19 ms 344 KB Output is correct
4 Correct 22 ms 344 KB Output is correct
5 Correct 24 ms 344 KB Output is correct
6 Correct 21 ms 344 KB Output is correct
7 Correct 23 ms 344 KB Output is correct
8 Correct 19 ms 344 KB Output is correct
9 Correct 22 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 22 ms 344 KB Output is correct
15 Correct 28 ms 344 KB Output is correct
16 Correct 19 ms 344 KB Output is correct
17 Correct 20 ms 344 KB Output is correct

Subtask #2
80.499999996 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 77 ms 344 KB Output is correct (P=0.001, F=15.1, Q=10.8) -> 90.00 points
2 Correct 330 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=47.8) -> 90.00 points
3 Correct 657 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=95.8) -> 86.71 points
4 Correct 1313 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=192.7) -> 87.80 points
5 Correct 1717 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=248.6) -> 86.76 points
6 Correct 2460 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=377.0) -> 80.50 points
7 Correct 3198 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=493.0) -> 88.06 points
8 Correct 4290 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=647.4) -> 85.56 points
9 Correct 4726 ms 344 KB Output is correct (P=0.2, F=731.4, Q=729.4) -> 90.00 points