/in/foo.c:1:1: warning: data definition has no type or storage class
 a,b = input().split(' ')
 ^
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
/in/foo.c:1:3: warning: type defaults to 'int' in declaration of 'b' [-Wimplicit-int]
 a,b = input().split(' ')
   ^
/in/foo.c:1:7: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
 a,b = input().split(' ')
       ^~~~~
/in/foo.c:1:14: error: request for member 'split' in something not a structure or union
 a,b = input().split(' ')
              ^
/in/foo.c:2:1: error: expected ',' or ';' before 'a'
 a = float(a)
 ^