oj.uz

Submission #1073524

# Submission time Handle Problem Language Result Execution time Memory
1073524 2024-08-24T15:41:24 Z jer033 COVID tests (CEOI24_covid) C++17
97.7 / 100
 5039 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 spec = 0;

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) and spec)
        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)
            {
                spec = 1;
                work(8);
            }
            else if (P < 0.15)
            {
                spec = 1;
                work(8);
            }
            else if (P < 0.19)
                work(4);
            else
            {
                spec = 1;
                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 1 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 21 ms 344 KB Output is correct
2 Correct 19 ms 344 KB Output is correct
3 Correct 20 ms 340 KB Output is correct
4 Correct 24 ms 344 KB Output is correct
5 Correct 24 ms 344 KB Output is correct
6 Correct 26 ms 344 KB Output is correct
7 Correct 19 ms 344 KB Output is correct
8 Correct 19 ms 344 KB Output is correct
9 Correct 19 ms 344 KB Output is correct
10 Correct 22 ms 344 KB Output is correct
11 Correct 19 ms 344 KB Output is correct
12 Correct 25 ms 344 KB Output is correct
13 Correct 27 ms 344 KB Output is correct
14 Correct 29 ms 344 KB Output is correct
15 Correct 19 ms 344 KB Output is correct
16 Correct 22 ms 344 KB Output is correct
17 Correct 19 ms 344 KB Output is correct

Subtask #2
87.699999996 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 344 KB Output is correct (P=0.001, F=15.1, Q=10.7) -> 90.00 points
2 Correct 364 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=47.3) -> 90.00 points
3 Correct 653 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=94.6) -> 90.00 points
4 Correct 1240 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=190.1) -> 90.00 points
5 Correct 1673 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=243.9) -> 90.00 points
6 Correct 2475 ms 340 KB Output is correct (P=0.068648, F=366.2, Q=368.6) -> 87.70 points
7 Correct 3585 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=493.0) -> 88.06 points
8 Correct 4383 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=633.1) -> 90.00 points
9 Correct 5039 ms 344 KB Output is correct (P=0.2, F=731.4, Q=729.4) -> 90.00 points