oj.uz

Submission #1072675

# Submission time Handle Problem Language Result Execution time Memory
1072675 2024-08-24T02:29:08 Z jer033 Sprinklers (CEOI24_sprinklers) C++17
26 / 100
 87 ms 1628 KB 
#include <bits/stdc++.h>
using namespace std;

vector<int> in_between;

bool possible(int K, vector<int> (&sprinks), vector<int> (&flowers))
{
    int N = sprinks.size();
    int M = flowers.size();
    int covered = -1;
    int towater = 0;
    int i = 0;
    while (i<N)
    {
        if (towater<M)
        {
            int loc = sprinks[i];
            if (flowers[towater]<loc)
            {
                if (flowers[towater] < (loc-K))
                    return 0;
                if (((i+1)<N) and (flowers[towater] >= (sprinks[i+1]-K)) and (in_between[i]>0))
                {
                    i++;
                    covered = loc+K;
                }
                else
                    covered = loc;
            }
            else
                covered = loc+K;

            while ((towater<M) and (flowers[towater]<=covered))
                towater++;
        }
        i++;
    }
    if (towater==M)
        return 1;
    return 0;
}

void report(int K, vector<int> (&sprinks), vector<int> (&flowers))
{
    cout << K << '\n';
    int N = sprinks.size();
    int M = flowers.size();
    int covered = -1;
    int towater = 0;
    int i = 0;
    while (i<N)
    {
        if (towater<M)
        {
            int loc = sprinks[i];
            if (flowers[towater]<loc)
            {
                if (((i+1)<N) and (flowers[towater] >= (sprinks[i+1]-K)) and (in_between[i]>0))
                {
                    i++;
                    covered = loc+K;
                    cout << "RL";
                }
                else
                {
                    covered = loc;
                    cout << 'L';
                }
            }
            else
            {
                covered = loc+K;
                cout << 'R';
            }

            while ((towater<M) and (flowers[towater]<=covered))
                towater++;
        }
        else
            cout << 'R';
        i++;
    }
    cout << '\n';
}

int main()
{
    int N, M;
    cin >> N >> M;
    vector<int> sprinks(N);
    vector<int> flowers(M);
    for (int i=0; i<N; i++)
        cin >> sprinks[i];
    for (int i=0; i<M; i++)
        cin >> flowers[i];
    if (N==1)
    {
        int left = flowers[0]-sprinks[0];
        int righ = flowers[M-1]-sprinks[0];
        if ((left<0) and (righ>0))
            cout << "-1\n";
        else
        {
            cout << max(abs(left), abs(righ)) << '\n';
            if (left<0)
                cout << "L\n";
            else
                cout << "R\n";
        }
    }
    else
    {
        in_between = vector<int> (N-1, 0);
        int curr = 0;
        for (int i=0; i<M; i++)
        {
            while (((curr+1)<N) and (flowers[i]>=sprinks[curr+1]))
                curr++;
            if (((curr+1)<N) and (flowers[i]>sprinks[curr]) and (flowers[i]<sprinks[curr+1]))
                in_between[curr]++;
        }
        int lo = 0;
        int hi = 1'000'000'005;
        while (lo!=hi)
        {
            int mid = (lo+hi)/2;
            if (possible(mid, sprinks, flowers))
                hi = mid;
            else
                lo = mid+1;
        }
        if (lo == 1'000'000'005)
            cout << "-1\n";
        else
            report(lo, sprinks, flowers);
    }
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Correct
2 Correct 0 ms 344 KB Correct

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 33 ms 600 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 27 ms 604 KB Correct
5 Correct 25 ms 604 KB Correct
6 Correct 1 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 7 ms 348 KB Correct
9 Correct 0 ms 348 KB Correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Correct
2 Correct 27 ms 600 KB Correct
3 Correct 6 ms 488 KB Correct
4 Correct 64 ms 1476 KB Correct
5 Correct 61 ms 1624 KB Correct
6 Correct 0 ms 344 KB Correct
7 Correct 1 ms 348 KB Correct
8 Correct 56 ms 1620 KB Correct
9 Correct 56 ms 1620 KB Correct
10 Correct 68 ms 1620 KB Correct
11 Correct 32 ms 1104 KB Correct
12 Correct 38 ms 1104 KB Correct
13 Correct 41 ms 1348 KB Correct
14 Correct 50 ms 1364 KB Correct
15 Correct 50 ms 1360 KB Correct
16 Correct 51 ms 1364 KB Correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Correct
2 Correct 0 ms 344 KB Correct
3 Correct 1 ms 348 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 1 ms 344 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 1 ms 344 KB Correct
9 Correct 1 ms 348 KB Correct
10 Correct 1 ms 348 KB Correct
11 Correct 0 ms 424 KB Correct
12 Correct 1 ms 348 KB Correct
13 Correct 0 ms 348 KB Correct
14 Correct 0 ms 348 KB Correct
15 Correct 1 ms 348 KB Correct
16 Correct 1 ms 600 KB Correct
17 Correct 0 ms 344 KB Correct
18 Correct 0 ms 348 KB Correct
19 Correct 0 ms 436 KB Correct
20 Correct 0 ms 348 KB Correct

Subtask #4
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Correct
2 Correct 30 ms 864 KB Correct
3 Correct 87 ms 1616 KB Correct
4 Correct 80 ms 1620 KB Correct
5 Correct 79 ms 1460 KB Correct
6 Correct 72 ms 1616 KB Correct
7 Correct 80 ms 1616 KB Correct
8 Correct 75 ms 1620 KB Correct
9 Correct 81 ms 1616 KB Correct
10 Correct 82 ms 1620 KB Correct
11 Correct 79 ms 1468 KB Correct
12 Correct 0 ms 348 KB Correct
13 Correct 0 ms 348 KB Correct
14 Correct 43 ms 1084 KB Correct
15 Correct 31 ms 1224 KB Correct
16 Correct 44 ms 1116 KB Correct
17 Correct 27 ms 1628 KB Correct
18 Correct 45 ms 1616 KB Correct
19 Correct 38 ms 1488 KB Correct
20 Correct 67 ms 1480 KB Correct
21 Correct 72 ms 1620 KB Correct
22 Correct 72 ms 1616 KB Correct
23 Incorrect 55 ms 1616 KB User solution is worse than jury's solution
24 Halted 0 ms 0 KB -

Subtask #5
0.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Correct
2 Correct 0 ms 344 KB Correct
3 Correct 33 ms 600 KB Correct
4 Correct 0 ms 348 KB Correct
5 Correct 27 ms 604 KB Correct
6 Correct 25 ms 604 KB Correct
7 Correct 1 ms 348 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 7 ms 348 KB Correct
10 Correct 0 ms 348 KB Correct
11 Correct 27 ms 600 KB Correct
12 Correct 6 ms 488 KB Correct
13 Correct 64 ms 1476 KB Correct
14 Correct 61 ms 1624 KB Correct
15 Correct 0 ms 344 KB Correct
16 Correct 1 ms 348 KB Correct
17 Correct 56 ms 1620 KB Correct
18 Correct 56 ms 1620 KB Correct
19 Correct 68 ms 1620 KB Correct
20 Correct 32 ms 1104 KB Correct
21 Correct 38 ms 1104 KB Correct
22 Correct 41 ms 1348 KB Correct
23 Correct 50 ms 1364 KB Correct
24 Correct 50 ms 1360 KB Correct
25 Correct 51 ms 1364 KB Correct
26 Correct 1 ms 348 KB Correct
27 Correct 0 ms 348 KB Correct
28 Correct 1 ms 344 KB Correct
29 Correct 0 ms 348 KB Correct
30 Correct 0 ms 348 KB Correct
31 Correct 1 ms 344 KB Correct
32 Correct 1 ms 348 KB Correct
33 Correct 1 ms 348 KB Correct
34 Correct 0 ms 424 KB Correct
35 Correct 1 ms 348 KB Correct
36 Correct 0 ms 348 KB Correct
37 Correct 0 ms 348 KB Correct
38 Correct 1 ms 348 KB Correct
39 Correct 1 ms 600 KB Correct
40 Correct 0 ms 344 KB Correct
41 Correct 0 ms 348 KB Correct
42 Correct 0 ms 436 KB Correct
43 Correct 0 ms 348 KB Correct
44 Correct 30 ms 864 KB Correct
45 Correct 87 ms 1616 KB Correct
46 Correct 80 ms 1620 KB Correct
47 Correct 79 ms 1460 KB Correct
48 Correct 72 ms 1616 KB Correct
49 Correct 80 ms 1616 KB Correct
50 Correct 75 ms 1620 KB Correct
51 Correct 81 ms 1616 KB Correct
52 Correct 82 ms 1620 KB Correct
53 Correct 79 ms 1468 KB Correct
54 Correct 0 ms 348 KB Correct
55 Correct 0 ms 348 KB Correct
56 Correct 43 ms 1084 KB Correct
57 Correct 31 ms 1224 KB Correct
58 Correct 44 ms 1116 KB Correct
59 Correct 27 ms 1628 KB Correct
60 Correct 45 ms 1616 KB Correct
61 Correct 38 ms 1488 KB Correct
62 Correct 67 ms 1480 KB Correct
63 Correct 72 ms 1620 KB Correct
64 Correct 72 ms 1616 KB Correct
65 Incorrect 55 ms 1616 KB User solution is worse than jury's solution
66 Halted 0 ms 0 KB -