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Submission #272744

# Submission time Handle Problem Language Result Execution time Memory
272744 2020-08-18T15:02:03 Z toonewbie Rice Hub (IOI11_ricehub) C++17
100 / 100
 24 ms 3072 KB 
#include "ricehub.h"
#include <bits/stdc++.h>

using namespace std;

const int N = 100005;

int arr[N];
long long pref[N];
int besthub(int n, int l, int X[], long long m){  
    for (int i = 1; i <= n; i++) {
    	arr[i] = X[i - 1];
    	pref[i] = pref[i - 1] + arr[i];
    }
    int res = 0;
    for (int i = 1; i <= n; i++) {
        int l = i, r = n, j;
        while (r - l >= 0) {
            int mid = (l + r) >> 1;
            int mmid = (i + mid) >> 1;
            long long cost = 1LL * arr[mmid] * (mmid - i + 1) - (pref[mmid] - pref[i - 1]);
            cost += (pref[mid] - pref[mmid]) - 1LL * arr[mmid] * (mid - mmid);
            if (cost <= m) {
                j = mid; l = mid + 1;
            } else {
                r = mid - 1;
            }
        }
        res = max(res, j - i + 1);
    }
    return res;
}

Compilation message

ricehub.cpp: In function 'int besthub(int, int, int*, long long int)':
ricehub.cpp:29:26: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized]
   29 |         res = max(res, j - i + 1);
      |                        ~~^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 360 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 380 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 2 ms 384 KB Output is correct
24 Correct 2 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 2 ms 512 KB Output is correct
27 Correct 2 ms 512 KB Output is correct
28 Correct 2 ms 512 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 768 KB Output is correct
2 Correct 5 ms 768 KB Output is correct
3 Correct 24 ms 2944 KB Output is correct
4 Correct 24 ms 3072 KB Output is correct
5 Correct 11 ms 1408 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 21 ms 2688 KB Output is correct
8 Correct 21 ms 2688 KB Output is correct
9 Correct 10 ms 1408 KB Output is correct
10 Correct 10 ms 1408 KB Output is correct
11 Correct 24 ms 2944 KB Output is correct
12 Correct 23 ms 2944 KB Output is correct
13 Correct 11 ms 1536 KB Output is correct
14 Correct 12 ms 1536 KB Output is correct
15 Correct 18 ms 2304 KB Output is correct
16 Correct 18 ms 2304 KB Output is correct
17 Correct 22 ms 2688 KB Output is correct
18 Correct 21 ms 2688 KB Output is correct
19 Correct 23 ms 2808 KB Output is correct
20 Correct 22 ms 2816 KB Output is correct