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Submission #28907

# Submission time Handle Problem Language Result Execution time Memory
28907 2017-07-17T17:06:01 Z kavun Rice Hub (IOI11_ricehub) C++14
100 / 100
 26 ms 7488 KB 
#include "ricehub.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
ll p[200000], bound;
int hub;

bool check(int x, int X[])
{
  int m = (x-1) / 2;
  if((x % 2) && (p[x-1] - p[m] - p[m-1] <= bound))
    return true;
  else if((x % 2 == 0) && (p[x-1] - p[m] - p[m-1] - X[m] <= bound))
    return true;

  for(int i = 1; i <= hub - x; i++)
    {
      int m = i + (x-1)/2;
      if((x % 2) && (p[i+x-1] - p[m] - (p[m-1] - p[i-1]) <= bound))
	  return true;
      else if((x % 2 == 0) && (p[i+x-1] - p[m] - (p[m-1] - p[i-1]) - X[m] <= bound))
	  return true;
    }
  return false;
}

int search(int lo, int hi, int X[])
{
  int m = (lo + hi)/2;
  if(lo == hi)
    return lo;
  if(hi == lo + 1)
    m = hi;
  if(check(m,X))
    return search(m,hi,X);
  else 
    return search(lo,m-1,X);

}

int besthub(int R, int L, int X[], long long B)
{
  bound = B;
  hub = R;
  p[0] = X[0];
  for(int i = 1; i < R; i++)
    p[i] = p[i-1] + X[i];


  return search(1,R,X);
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 7488 KB Output is correct
2 Correct 0 ms 7488 KB Output is correct
3 Correct 0 ms 7488 KB Output is correct
4 Correct 0 ms 7488 KB Output is correct
5 Correct 0 ms 7488 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 7488 KB Output is correct
2 Correct 0 ms 7488 KB Output is correct
3 Correct 0 ms 7488 KB Output is correct
4 Correct 0 ms 7488 KB Output is correct
5 Correct 0 ms 7488 KB Output is correct
6 Correct 0 ms 7488 KB Output is correct
7 Correct 0 ms 7488 KB Output is correct
8 Correct 0 ms 7488 KB Output is correct
9 Correct 0 ms 7488 KB Output is correct
10 Correct 0 ms 7488 KB Output is correct
11 Correct 0 ms 7488 KB Output is correct
12 Correct 0 ms 7488 KB Output is correct
13 Correct 0 ms 7488 KB Output is correct
14 Correct 0 ms 7488 KB Output is correct
15 Correct 0 ms 7488 KB Output is correct
16 Correct 0 ms 7488 KB Output is correct
17 Correct 0 ms 7488 KB Output is correct
18 Correct 0 ms 7488 KB Output is correct
19 Correct 0 ms 7488 KB Output is correct
20 Correct 0 ms 7488 KB Output is correct
21 Correct 0 ms 7488 KB Output is correct
22 Correct 0 ms 7488 KB Output is correct
23 Correct 0 ms 7488 KB Output is correct
24 Correct 0 ms 7488 KB Output is correct
25 Correct 0 ms 7488 KB Output is correct
26 Correct 0 ms 7488 KB Output is correct
27 Correct 0 ms 7488 KB Output is correct
28 Correct 0 ms 7488 KB Output is correct

Subtask #3
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 7488 KB Output is correct
2 Correct 0 ms 7488 KB Output is correct
3 Correct 0 ms 7488 KB Output is correct
4 Correct 0 ms 7488 KB Output is correct
5 Correct 0 ms 7488 KB Output is correct
6 Correct 0 ms 7488 KB Output is correct
7 Correct 0 ms 7488 KB Output is correct
8 Correct 0 ms 7488 KB Output is correct
9 Correct 0 ms 7488 KB Output is correct
10 Correct 0 ms 7488 KB Output is correct
11 Correct 0 ms 7488 KB Output is correct
12 Correct 0 ms 7488 KB Output is correct
13 Correct 0 ms 7488 KB Output is correct
14 Correct 0 ms 7488 KB Output is correct
15 Correct 0 ms 7488 KB Output is correct
16 Correct 0 ms 7488 KB Output is correct
17 Correct 0 ms 7488 KB Output is correct
18 Correct 0 ms 7488 KB Output is correct
19 Correct 0 ms 7488 KB Output is correct
20 Correct 0 ms 7488 KB Output is correct
21 Correct 0 ms 7488 KB Output is correct
22 Correct 0 ms 7488 KB Output is correct
23 Correct 0 ms 7488 KB Output is correct
24 Correct 0 ms 7488 KB Output is correct
25 Correct 0 ms 7488 KB Output is correct
26 Correct 0 ms 7488 KB Output is correct
27 Correct 0 ms 7488 KB Output is correct
28 Correct 0 ms 7488 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7488 KB Output is correct
2 Correct 3 ms 7488 KB Output is correct
3 Correct 16 ms 7488 KB Output is correct
4 Correct 13 ms 7488 KB Output is correct
5 Correct 6 ms 7488 KB Output is correct
6 Correct 9 ms 7488 KB Output is correct
7 Correct 13 ms 7488 KB Output is correct
8 Correct 26 ms 7488 KB Output is correct
9 Correct 3 ms 7488 KB Output is correct
10 Correct 6 ms 7488 KB Output is correct
11 Correct 19 ms 7488 KB Output is correct
12 Correct 16 ms 7488 KB Output is correct
13 Correct 6 ms 7488 KB Output is correct
14 Correct 6 ms 7488 KB Output is correct
15 Correct 13 ms 7488 KB Output is correct
16 Correct 13 ms 7488 KB Output is correct
17 Correct 16 ms 7488 KB Output is correct
18 Correct 9 ms 7488 KB Output is correct
19 Correct 13 ms 7488 KB Output is correct
20 Correct 16 ms 7488 KB Output is correct