class Solution:
def convertToTitle(self, columnNumber: int) -> str:
ans = ""
while columnNumber > 0:
columnNumber -= 1
ans += chr(columnNumber % 26 + ord("A"))
columnNumber //= 26
return ans[::-1]
Y2xhc3MgU29sdXRpb246CiAgICBkZWYgY29udmVydFRvVGl0bGUoc2VsZiwgY29sdW1uTnVtYmVyOiBpbnQpIC0+IHN0cjoKICAgICAgICBhbnMgPSAiIgogICAgICAgIHdoaWxlIGNvbHVtbk51bWJlciA+IDA6CiAgICAgICAgICAgIGNvbHVtbk51bWJlciAtPSAxCiAgICAgICAgICAgIGFucyArPSBjaHIoY29sdW1uTnVtYmVyICUgMjYgKyBvcmQoIkEiKSkKICAgICAgICAgICAgY29sdW1uTnVtYmVyIC8vPSAyNgoKICAgICAgICByZXR1cm4gYW5zWzo6LTFd