Just like most of the contests on codechef, will there be time multiplier for slower languages ( Java, Python ) on ACM - ICPC preliminary online round ?
No. There is no such multiplier for “slower” programming languages. The time limit is same for all the programming languages. Moreover, the judges at ACM ICPC have solutions available only in certain languages (C++,Java,Kotlin) and they do not guarantee that a certain problem can be solved using any other programming language. Although, you are allowed to use other languages like Python at your own risk.