Submission #1608470
Source Code Expand
from collections import Counter N,A,B = map(int, raw_input().split()) src = map(int, raw_input().split()) src.sort(reverse=True) counter = Counter(src) cums = [0] for a in src: cums.append(cums[-1] + a) maxave = 0.0 maxns = [] for n in range(A,B+1): ave = cums[n]*1.0 / n if ave > maxave: maxave = ave maxns = [n] elif ave == maxave: maxns.append(n) ncr = [[1]] for n in range(1,N+1): ncr.append([1]) for r in range(1,n): ncr[n].append(ncr[n-1][r-1] + ncr[n-1][r]) ncr[n].append(1) ans = 0 for n in maxns: last = src[n-1] r = 1 for i in range(n-2,-1,-1): if src[i] == last: r += 1 else: break ans += ncr[counter[last]][r] print("{0:.10f}".format(maxave)) print(ans)
Submission Info
Submission Time | |
---|---|
Task | D - Maximum Average Sets |
User | prd_xxx |
Language | Python (2.7.6) |
Score | 0 |
Code Size | 767 Byte |
Status | WA |
Exec Time | 12 ms |
Memory | 2808 KB |
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 400 | ||||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, sample_04.txt, subtask_1_1.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_2.txt, subtask_1_3.txt, subtask_1_4.txt, subtask_1_5.txt, subtask_1_6.txt, subtask_1_7.txt, subtask_1_8.txt, subtask_1_9.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 11 ms | 2808 KB |
sample_02.txt | AC | 11 ms | 2808 KB |
sample_03.txt | AC | 11 ms | 2808 KB |
sample_04.txt | AC | 12 ms | 2808 KB |
subtask_1_1.txt | AC | 11 ms | 2808 KB |
subtask_1_10.txt | AC | 11 ms | 2808 KB |
subtask_1_11.txt | WA | 11 ms | 2808 KB |
subtask_1_12.txt | AC | 12 ms | 2808 KB |
subtask_1_13.txt | AC | 12 ms | 2808 KB |
subtask_1_14.txt | AC | 12 ms | 2808 KB |
subtask_1_15.txt | AC | 11 ms | 2808 KB |
subtask_1_2.txt | AC | 11 ms | 2808 KB |
subtask_1_3.txt | AC | 11 ms | 2808 KB |
subtask_1_4.txt | AC | 11 ms | 2808 KB |
subtask_1_5.txt | AC | 12 ms | 2808 KB |
subtask_1_6.txt | AC | 11 ms | 2808 KB |
subtask_1_7.txt | AC | 12 ms | 2808 KB |
subtask_1_8.txt | AC | 11 ms | 2808 KB |
subtask_1_9.txt | AC | 12 ms | 2808 KB |