Initially I use GNU C++17 when I submit codes. I submitted code for 235A — LCM Challenge and got WA on test 61 using GNU C++17. Then again I submitted the same code in GNU C++14 and got Accepted. My submissions are here,
GNU C++17: 78659557 (Wrong answer on test 61)
GNU C++14: 78659665 (Accepted)
I found no explanation of it and thinking about what if it happened in contest time. Can you suggest me any reason? Thank you so much!