对拍 For Linux

#!/bin/sh
 g++ -g gene.cpp -o gene
 g++ -g a.cpp -o a
 g++ -g b.cpp -o b
 while true; do
  ./gene > input
  ./a < input > output
  ./b < input > answer
  if diff output answer; then
   echo AC
  else
   echo WA
   break
  fi
done

命名:pat.sh