The objective of this problem is to determine the number of unique vowels used in the given string.

 Now count vowels in STRING.

EXAMPLE:

 STRING='We are the MaTLaBins'; then OUTPUT is 3

or,

 STRING='LaBoRaToRy'; then OUTPUT will be 2
Solve

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Last Solution submitted on Nov 13, 2025

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Augusto Mazzei minnolina Riccardo G. Shahriar Kabir

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