Submission #405804

Source Code Expand

MOD = 1_000_000_007
n, k = gets.split.map(&:to_i)
ans = 0
if n > k
    ans = (1..(n+k-1)).inject(:*) / ((1..(n-1)).inject(:*) * (1..k).inject(:*)) % MOD
elsif n == k
    ans = 1
else    
    r = k % n
    ans = ((n - r + 1)..n).inject(:*) / (1..r).inject(:*) % MOD
end
p ans

Submission Info

Submission Time
Task B - 高橋幼稚園
User takuk
Language Ruby (2.1.5p273)
Score 0
Code Size 285 Byte
Status RE
Exec Time 62 ms
Memory 5220 KB

Judge Result

Set Name Sample Subtask1 Subtask2
Score / Max Score 0 / 0 0 / 80 0 / 20
Status
AC × 3
AC × 16
RE × 5
AC × 28
RE × 5
Set Name Test Cases
Sample subtask0_sample_01.txt, subtask0_sample_02.txt, subtask0_sample_03.txt
Subtask1 subtask0_sample_01.txt, subtask0_sample_02.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt
Subtask2 subtask0_sample_01.txt, subtask0_sample_02.txt, subtask0_sample_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt
Case Name Status Exec Time Memory
subtask0_sample_01.txt AC 52 ms 5100 KB
subtask0_sample_02.txt AC 53 ms 5096 KB
subtask0_sample_03.txt AC 54 ms 5076 KB
subtask1_01.txt RE 52 ms 5100 KB
subtask1_02.txt AC 59 ms 5084 KB
subtask1_03.txt AC 58 ms 5108 KB
subtask1_04.txt AC 52 ms 5140 KB
subtask1_05.txt AC 53 ms 5096 KB
subtask1_06.txt AC 54 ms 5100 KB
subtask1_07.txt AC 54 ms 5100 KB
subtask1_08.txt AC 54 ms 5100 KB
subtask1_09.txt AC 55 ms 5144 KB
subtask1_10.txt RE 53 ms 5100 KB
subtask1_11.txt AC 51 ms 5100 KB
subtask1_12.txt RE 56 ms 5164 KB
subtask1_13.txt AC 53 ms 5100 KB
subtask1_14.txt AC 53 ms 5100 KB
subtask1_15.txt AC 53 ms 5096 KB
subtask1_16.txt AC 54 ms 5100 KB
subtask1_17.txt RE 55 ms 5092 KB
subtask1_18.txt AC 56 ms 5088 KB
subtask1_19.txt RE 62 ms 5100 KB
subtask2_01.txt AC 54 ms 5096 KB
subtask2_02.txt AC 54 ms 5092 KB
subtask2_03.txt AC 60 ms 5100 KB
subtask2_04.txt AC 52 ms 5100 KB
subtask2_05.txt AC 53 ms 5096 KB
subtask2_06.txt AC 55 ms 5092 KB
subtask2_07.txt AC 55 ms 5096 KB
subtask2_08.txt AC 54 ms 5096 KB
subtask2_09.txt AC 52 ms 5100 KB
subtask2_10.txt AC 54 ms 5220 KB
subtask2_11.txt AC 53 ms 5100 KB