문제: https://www.acmicpc.net/problem/2697 문제For this problem, you will write a program that takes a (possibly long) string of decimal digits, and outputs the permutation of those decimal digits that has the next larger value (as a decimal number) than the input number. For example: 123 -> 132 279134399742 -> 279134423799It is possible that no permutation of the input digits has a larger value. Fo..