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#!/usr/bin/env python3
import sys
from collections import Counter
def odd_letters(input_string: str) -> bool:
"""
Check if all letters in the input string have an odd frequency.
Args:
input_string (str): The input string to check.
Returns:
bool: True if all letters have an odd frequency, False otherwise.
"""
freq = Counter(input_string)
return all(count % 2 == 1 for count in freq.values())
def main():
result = odd_letters(sys.argv[1])
print(result)
if __name__ == '__main__':
main()
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