INI Key Value Flatten

You are given n lines of a simplified INI-style configuration file. Each line is exactly one of:

• a section header, written [name]
• a key/value assignment, written key=value (the value may be empty, and never contains = or a newline)
• a blank line, which is ignored

Any key/value assignment that appears before the first section header belongs to a virtual section named global. Section names and keys consist only of lowercase letters, digits, and underscores (so they never contain a .). If the same key is assigned more than once within the same section, the LAST assignment wins.

Produce the flattened output: for every distinct (section, key) pair that ends up with a value, print one line section.key=value. Sort these lines lexicographically (as plain strings) before printing.

Input format

Line 1: an integer n. Lines 2..n+1: each a section header, a key/value assignment, or blank.

Output format

The sorted flattened lines, one per line. If there are no key/value assignments at all, print nothing.

Constraints

• 0 ≤ n ≤ 100
• section names and keys are 1 to 20 characters from [a-z0-9_]
• values are 0 to 30 characters, never containing = or \n