Sanalista

def f(inp):
    for x in range(1, len(inp)):
        for char in inp[x]:
            if inp[x].count(char) % 2 != 0:
                print(char)
                inp[0] -= 1
                break 
    print(inp[0])


inp = str(input())
inp = inp.split()
inp[0] = int(inp[0])

f(inp)

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER