Acronym Generator

Given an input string, generate an acronym by taking the first letter of each word in the string and converting it to uppercase. For example, if the input is Portable Network Graphics, the output should be PNG.

Formally, if the input string is (S) and (w_i) represents the i-th word in (S), then the acronym is computed as
[ \text{acronym} = \text{Upper}(w_1[0]),\text{Upper}(w_2[0]),\cdots,\text{Upper}(w_n[0]) ]
where each word is derived by splitting (S) using whitespace as the delimiter.

inputFormat

The input is provided via standard input as a single line containing a string (S). The string may contain extra spaces and punctuation.

outputFormat

Output the acronym generated by concatenating the uppercase first letter of each word, printed on standard output.## sample

Portable Network Graphics

PNG