AtCoder Beginner Contest 068
Updated:
Source codes
Solutions
A - ABCxxx
puts "ABC" + gets.chomp
B - Break Number
  int ans = 1;
  while (ans * 2 <= N) {
    ans *= 2;
  }
Others
A - sample: 3, tle: 2.000, time: 00:44, from_submit: 01:31
B - sample: 4, tle: 2.000, time: 01:31, from_submit: 00:00