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Submission #562258

# Submission time Handle Problem Language Result Execution time Memory
562258 2022-05-14T08:23:12 Z four_specks Rice Hub (IOI11_ricehub) C++17
100 / 100
 25 ms 3332 KB 
#include "ricehub.h"

#include <bits/stdc++.h>

using namespace std;

namespace
{
} // namespace

int besthub(int R, int L, int X[], long long B)
{
    vector<long> pref(R + 1, 0), suff(R + 1, 0);
    for (int i = 0; i < R; i++)
        pref[i + 1] = pref[i] + X[i];
    for (int i = R - 1; i >= 0; i--)
        suff[i] = suff[i + 1] - X[i];

    cerr << pref[3] << '\n';

    int res = 0;

    for (int i = 0; i < R; i++)
    {
        int lo = i, hi = R;
        while (lo < hi)
        {
            int mid = (lo + hi + 1) / 2;

            int m = (i + mid) / 2;
            // cerr << i << ' ' << mid << ' ' << m << ' ' << pref[mid] - pref[m] << ' ' << suff[i] - suff[m] << ' ' << (long)(mid - i) * X[m] << '\n';
            if (pref[mid] - pref[m] + suff[i] - suff[m] - (long)(mid - m) * X[m] - (long)(m - i) * -X[m] <= B)
                lo = mid;
            else
                hi = mid - 1;
        }

        res = max(res, lo - i);
    }

    return res;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 304 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 312 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 312 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 312 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 308 KB Output is correct
21 Correct 1 ms 304 KB Output is correct
22 Correct 1 ms 308 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 312 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 308 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 320 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 444 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 2 ms 340 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 596 KB Output is correct
2 Correct 4 ms 828 KB Output is correct
3 Correct 18 ms 3332 KB Output is correct
4 Correct 17 ms 3284 KB Output is correct
5 Correct 8 ms 1576 KB Output is correct
6 Correct 7 ms 1620 KB Output is correct
7 Correct 15 ms 2972 KB Output is correct
8 Correct 16 ms 3028 KB Output is correct
9 Correct 7 ms 1492 KB Output is correct
10 Correct 9 ms 1492 KB Output is correct
11 Correct 19 ms 3236 KB Output is correct
12 Correct 16 ms 3264 KB Output is correct
13 Correct 13 ms 1620 KB Output is correct
14 Correct 9 ms 1596 KB Output is correct
15 Correct 13 ms 2484 KB Output is correct
16 Correct 25 ms 2548 KB Output is correct
17 Correct 22 ms 2908 KB Output is correct
18 Correct 14 ms 2932 KB Output is correct
19 Correct 16 ms 3156 KB Output is correct
20 Correct 20 ms 3140 KB Output is correct