oj.uz

Submission #986436

# Submission time Handle Problem Language Result Execution time Memory
986436 2024-05-20T14:10:18 Z borisAngelov Bitaro's travel (JOI23_travel) C++17
100 / 100
 354 ms 7292 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 200005;

int n, q;

int a[maxn];

long long simulate(int pos)
{
    long long ans = 0;

    int minPos = pos;
    int maxPos = pos;

    while (true)
    {
        //cout << "now " << pos << endl;
        //for (int i = 0; i < 1e9; ++i);
        if (pos == 1)
        {
            ans += (a[n] - a[1]);
            maxPos = n;
        }
        else if (pos == n)
        {
            ans += (a[n] - a[1]);
            minPos = 1;
        }
        else
        {
            //cout << "decide " << pos << " " << minPos << " " << maxPos << endl;
            if (a[pos] - a[minPos - 1] <= a[maxPos + 1] - a[pos]) // go left
            {
                //cout << "LEFT" << endl;
                int l = 1;
                int r = pos - 1;

                while (l <= r)
                {
                    int mid = (l + r) / 2;

                    if (a[pos] - a[mid] <= a[maxPos + 1] - a[pos])
                    {
                        r = mid - 1;
                    }
                    else
                    {
                        l = mid + 1;
                    }
                }

                ans += (a[pos] - a[l]);
                pos = l;
            }
            else // go right
            {
                //cout << "RIGHT" << endl;
                int l = pos + 1;
                int r = n;

                while (l <= r)
                {
                    int mid = (l + r) / 2;

                    if (a[mid] - a[pos] < a[pos] - a[minPos - 1])
                    {
                        l = mid + 1;
                    }
                    else
                    {
                        r = mid - 1;
                    }
                }

                ans += (a[r] - a[pos]);
                pos = r;
            }

            minPos = min(minPos, pos);
            maxPos = max(maxPos, pos);
        }

        if (minPos == 1 && maxPos == n)
        {
            break;
        }
    }

    return ans;
}

void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int main()
{
    fastIO();

    cin >> n;

    for (int i = 1; i <= n; ++i)
    {
        cin >> a[i];
    }

    cin >> q;

    for (int i = 1; i <= q; ++i)
    {
        int x;
        cin >> x;

        int nxt = lower_bound(a + 1, a + n + 1, x) - a;
        int prv = nxt - 1;
        int where = -1;

        if (prv <= 0)
        {
            where = nxt;
        }
        else if (nxt > n)
        {
            where = prv;
        }
        else
        {
            if (x - a[prv] <= a[nxt] - x)
            {
                where = prv;
            }
            else
            {
                where = nxt;
            }
        }

        int dist1 = abs(a[where] - x);

        if (n == 1)
        {
            cout << dist1 << "\n";
            continue;
        }

        long long ans = dist1 + simulate(where);

        cout << ans << "\n";
    }

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 476 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 480 KB Output is correct
16 Correct 1 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 476 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 480 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 17 ms 3156 KB Output is correct
18 Correct 16 ms 2944 KB Output is correct
19 Correct 16 ms 3164 KB Output is correct
20 Correct 16 ms 3108 KB Output is correct
21 Correct 16 ms 3136 KB Output is correct
22 Correct 16 ms 3168 KB Output is correct
23 Correct 23 ms 3032 KB Output is correct
24 Correct 18 ms 2940 KB Output is correct
25 Correct 17 ms 3152 KB Output is correct
26 Correct 16 ms 3028 KB Output is correct
27 Correct 17 ms 2928 KB Output is correct
28 Correct 16 ms 3164 KB Output is correct
29 Correct 17 ms 3056 KB Output is correct
30 Correct 15 ms 2908 KB Output is correct
31 Correct 18 ms 3044 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 260 ms 5124 KB Output is correct
8 Correct 259 ms 5072 KB Output is correct
9 Correct 249 ms 4932 KB Output is correct
10 Correct 277 ms 4936 KB Output is correct
11 Correct 259 ms 5148 KB Output is correct
12 Correct 270 ms 5560 KB Output is correct
13 Correct 36 ms 4296 KB Output is correct
14 Correct 23 ms 1628 KB Output is correct
15 Correct 230 ms 6104 KB Output is correct
16 Correct 188 ms 6016 KB Output is correct
17 Correct 192 ms 5972 KB Output is correct
18 Correct 32 ms 4176 KB Output is correct

Subtask #4
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 476 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 480 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 17 ms 3156 KB Output is correct
18 Correct 16 ms 2944 KB Output is correct
19 Correct 16 ms 3164 KB Output is correct
20 Correct 16 ms 3108 KB Output is correct
21 Correct 16 ms 3136 KB Output is correct
22 Correct 16 ms 3168 KB Output is correct
23 Correct 23 ms 3032 KB Output is correct
24 Correct 18 ms 2940 KB Output is correct
25 Correct 17 ms 3152 KB Output is correct
26 Correct 16 ms 3028 KB Output is correct
27 Correct 17 ms 2928 KB Output is correct
28 Correct 16 ms 3164 KB Output is correct
29 Correct 17 ms 3056 KB Output is correct
30 Correct 15 ms 2908 KB Output is correct
31 Correct 18 ms 3044 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 348 KB Output is correct
38 Correct 260 ms 5124 KB Output is correct
39 Correct 259 ms 5072 KB Output is correct
40 Correct 249 ms 4932 KB Output is correct
41 Correct 277 ms 4936 KB Output is correct
42 Correct 259 ms 5148 KB Output is correct
43 Correct 270 ms 5560 KB Output is correct
44 Correct 36 ms 4296 KB Output is correct
45 Correct 23 ms 1628 KB Output is correct
46 Correct 230 ms 6104 KB Output is correct
47 Correct 188 ms 6016 KB Output is correct
48 Correct 192 ms 5972 KB Output is correct
49 Correct 32 ms 4176 KB Output is correct
50 Correct 314 ms 7096 KB Output is correct
51 Correct 245 ms 7252 KB Output is correct
52 Correct 210 ms 7288 KB Output is correct
53 Correct 347 ms 7248 KB Output is correct
54 Correct 354 ms 7292 KB Output is correct
55 Correct 354 ms 7248 KB Output is correct
56 Correct 55 ms 6996 KB Output is correct
57 Correct 56 ms 6992 KB Output is correct
58 Correct 59 ms 7164 KB Output is correct