运行 ID: 41049

Main.cc: In function ‘int main()’:
Main.cc:12:16: error: unable to find numeric literal operator ‘operator""A’
  for(int i=cnt-1A;i>=0;i--){
                ^~
Main.cc:12:16: note: use -std=gnu++11 or -fext-numeric-literals to enable more built-in suffixes