A simple bash script to compile, run and compare result file to judge result file for C programming language

compile.sh

#!/bin/bash

#try to compile the file
gcc -lm main.c -o main

#if compile successful then go on
if [[ $? = 0 ]]; then
  #try to run program with time limite
  timeout 1s ./main < input.txt
  RV=$?
  #if program run within the time then write result into output.txt file
  if [[ $RV = 0 ]]; then
    ./main < input.txt > output.txt
    #compare judge output file and current output file
    cmp -s answer.txt output.txt > /dev/null
    #if two file is same then result yes
    if [[ $? = 0 ]]; then
      echo "yes" > result.txt
    #if those are not same then result no
    else
      echo "no" > result.txt
    fi
  #if program can not run within the time then result TE
  elif [[ $RV = 124 ]]; then
    echo "TE" > result.txt
  #it means there is run time error
  else
    echo "RE" > result.txt
  fi
#we found compilation error
else
  echo "CE" > result.txt
fi

Le résultat correct du match entre le Bayern Munich et le Borussia Dortmund