Submission #52582747

Source Code Expand

N = int(input())
#N, Q = map(int, input().split())
#S = input()
A = list(map(int, input().split()))



P = [0] * N

for i in range(1, N):
  a = A[i]
  P[a - 1] = i
  
ans = []

count = 0

for i in range(N):
  if not i + 1 == A[i]:
    count += 1
    #print(i + 1, P[i] + 1)
    # 5 7
    ans.append([i + 1, P[i] + 1])
    A[P[i]] = A[i]
    P[A[i] - 1] = P[i]
    A[i] = i + 1
    P[i] = i
    #print(A)

print(count)
if len(ans) > 0:
  print('\n'.join([' '.join(map(str, a)) for a in ans]))

#print(A)
#print(A)

Submission Info

Submission Time
Task C - Sort
User zenmaaa
Language Python (PyPy 3.10-v7.3.12)
Score 300
Code Size 546 Byte
Status AC
Exec Time 142 ms
Memory 124844 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 3
AC × 23
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, random_11.txt, random_12.txt, random_13.txt, random_14.txt, random_15.txt, random_16.txt, random_17.txt, random_18.txt, random_19.txt, random_20.txt, sample_01.txt, sample_02.txt, sample_03.txt
Case Name Status Exec Time Memory
random_01.txt AC 138 ms 124684 KiB
random_02.txt AC 125 ms 122012 KiB
random_03.txt AC 138 ms 124548 KiB
random_04.txt AC 69 ms 86024 KiB
random_05.txt AC 141 ms 124532 KiB
random_06.txt AC 109 ms 120504 KiB
random_07.txt AC 55 ms 76288 KiB
random_08.txt AC 54 ms 76704 KiB
random_09.txt AC 79 ms 113716 KiB
random_10.txt AC 72 ms 103308 KiB
random_11.txt AC 110 ms 124520 KiB
random_12.txt AC 81 ms 99044 KiB
random_13.txt AC 140 ms 124844 KiB
random_14.txt AC 85 ms 99428 KiB
random_15.txt AC 142 ms 124788 KiB
random_16.txt AC 110 ms 120856 KiB
random_17.txt AC 115 ms 124092 KiB
random_18.txt AC 65 ms 82768 KiB
random_19.txt AC 116 ms 124252 KiB
random_20.txt AC 79 ms 96632 KiB
sample_01.txt AC 55 ms 76652 KiB
sample_02.txt AC 54 ms 76376 KiB
sample_03.txt AC 54 ms 76688 KiB