oj.uz

Submission #1073531

# Submission time Handle Problem Language Result Execution time Memory
1073531 2024-08-24T15:46:08 Z jer033 COVID tests (CEOI24_covid) C++17
94.55 / 100
 4985 ms 460 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(6);
            }
            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 460 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 23 ms 344 KB Output is correct
3 Correct 19 ms 344 KB Output is correct
4 Correct 19 ms 344 KB Output is correct
5 Correct 23 ms 340 KB Output is correct
6 Correct 25 ms 340 KB Output is correct
7 Correct 25 ms 344 KB Output is correct
8 Correct 33 ms 344 KB Output is correct
9 Correct 19 ms 344 KB Output is correct
10 Correct 19 ms 344 KB Output is correct
11 Correct 33 ms 344 KB Output is correct
12 Correct 19 ms 344 KB Output is correct
13 Correct 20 ms 344 KB Output is correct
14 Correct 19 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 19 ms 344 KB Output is correct

Subtask #2
84.549999996 / 90.0

# Verdict Execution time Memory Grader output
1 Correct 74 ms 344 KB Output is correct (P=0.001, F=15.1, Q=10.7) -> 90.00 points
2 Correct 350 ms 344 KB Output is correct (P=0.005256, F=51.1, Q=47.3) -> 90.00 points
3 Correct 683 ms 344 KB Output is correct (P=0.011546, F=94.9, Q=94.6) -> 90.00 points
4 Correct 1382 ms 344 KB Output is correct (P=0.028545, F=191.5, Q=190.1) -> 90.00 points
5 Correct 1810 ms 344 KB Output is correct (P=0.039856, F=246.3, Q=243.9) -> 90.00 points
6 Correct 2676 ms 344 KB Output is correct (P=0.068648, F=366.2, Q=368.6) -> 87.70 points
7 Correct 3410 ms 344 KB Output is correct (P=0.104571, F=490.3, Q=498.2) -> 84.55 points
8 Correct 4408 ms 344 KB Output is correct (P=0.158765, F=639.1, Q=633.1) -> 90.00 points
9 Correct 4985 ms 344 KB Output is correct (P=0.2, F=731.4, Q=729.4) -> 90.00 points