This week I solved two problems here on codeforces, both on C++. For my surprise, in those two problems, I received TLE as a verdict on really small testcases when using GNU C++11 as a language. The solutions for those tests were running pretty fast on my machine, so I decided to submit them with GNU C++14; surprisingly, those solutions were accepted, having really small execution time on the said tests.
What is the issue?
Appreciate the help!