/in/foo.c:1:1: warning: data definition has no type or storage class
 a, b = [float(i) for i in input().split()]
 ^
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
/in/foo.c:1:4: warning: type defaults to 'int' in declaration of 'b' [-Wimplicit-int]
 a, b = [float(i) for i in input().split()]
    ^
/in/foo.c:1:8: error: expected expression before '[' token
 a, b = [float(i) for i in input().split()]
        ^
/in/foo.c:2:1: error: expected ',' or ';' before 'print'
 print(int(a * b))
 ^~~~~