foo.c:1:1: warning: data definition has no type or storage class
 a=int(input（）)
 ^
foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
foo.c:1:3: error: expected expression before 'int'
 a=int(input（）)
   ^~~
foo.c:1:12: error: stray '\357' in program
 a=int(input（）)
            ^
foo.c:1:13: error: stray '\274' in program
 a=int(input（）)
             ^
foo.c:1:14: error: stray '\210' in program
 a=int(input（）)
              ^
foo.c:1:15: error: stray '\357' in program
 a=int(input（）)
               ^
foo.c:1:16: error: stray '\274' in program
 a=int(input（）)
                ^
foo.c:1:17: error: stray '\211' in program
 a=int(input（）)
                 ^

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。