Pair sort

def sort_pairs(n, arr):
    pos = {}
    
    for i in range(2 * n):
        if arr[i] not in pos:
            pos[arr[i]] = i 
        else:
            if pos[arr[i]] + 1 != i:
                arr[pos[arr[i]] + 1], arr[i] = arr[i], arr[pos[arr[i]] + 1]
                print(pos[arr[i]] + 1 + 1, i + 1)
                
n = int(input())
arr = list(map(int, input().split())) 

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER