Decode a Run-Length Encoded string back to original form (e.g., "a3b2c1" → "aaabbc").

Difficulty: Hard

Phase: 6 · Mixed Logical Challenges

XP Reward: 30 XP

Topics: Mixed Logical Challenges, Hard

Supported Languages: Python, JavaScript, C, C++, Java

Problem Description

Given run-length encoded string (e.g. 'a3b2c1'), decode back to original full string. Input Format: Read input from standard input (stdin). Output Format: Print the result to standard output (stdout).

Constraints

-10^9 <= N <= 10^9

Examples

Example 1

Input: a3b2c1

Output: aaabbc

Explanation: Sample execution for input a3b2c1