| Task: | Sorting |
| Sender: | ziihrs |
| Submission time: | 2021-01-31 15:41:00 +0200 |
| Language: | PyPy3 |
| Status: | READY |
| Result: | 0 |
| group | verdict | score |
|---|---|---|
| #1 | WRONG ANSWER | 0 |
| #2 | WRONG ANSWER | 0 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | WRONG ANSWER | 0.06 s | 1, 2 | details |
| #2 | WRONG ANSWER | 0.15 s | 2 | details |
| #3 | WRONG ANSWER | 0.10 s | 1, 2 | details |
| #4 | WRONG ANSWER | 0.13 s | 1, 2 | details |
Code
for _ in range(int(input())):
N = int(input())
A = list(map(lambda s: int(s)-1, input().split()))
for i in range(N):
if A[i] == i: continue
j = A.index(i)
if j == N-1 or j == i+1:
print('NO')
break
A[i], A[i+1], A[j], A[j+1] = A[j], A[j+1], A[i], A[i+1]
else:
print('YES')
Test details
Test 1
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 153 1 1 2 1 2 ... |
| correct output |
|---|
| YES YES NO NO NO ... |
| user output |
|---|
| YES YES NO NO NO ... |
Test 2
Group: 2
Verdict: WRONG ANSWER
| input |
|---|
| 1000 59 35 29 32 50 11 15 9 21 19 45 2... |
| correct output |
|---|
| YES NO YES NO YES ... |
| user output |
|---|
| NO NO NO NO NO ... |
Test 3
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 720 6 1 6 4 5 2 3 6 6 3 2 1 5 4 ... |
| correct output |
|---|
| YES NO NO NO YES ... |
| user output |
|---|
| NO NO NO NO NO ... |
Test 4
Group: 1, 2
Verdict: WRONG ANSWER
| input |
|---|
| 1000 8 7 4 2 8 6 3 5 1 8 3 8 2 7 5 4 6 1 ... |
| correct output |
|---|
| NO NO YES NO YES ... |
| user output |
|---|
| NO NO NO NO NO ... |