/in/foo.c:1:1: warning: data definition has no type or storage class
 string = str(input())
 ^~~~~~
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'string' [-Wimplicit-int]
/in/foo.c:1:10: warning: implicit declaration of function 'str' [-Wimplicit-function-declaration]
 string = str(input())
          ^~~
/in/foo.c:1:14: warning: implicit declaration of function 'input' [-Wimplicit-function-declaration]
 string = str(input())
              ^~~~~
/in/foo.c:1:10: error: initializer element is not constant
 string = str(input())
          ^~~
/in/foo.c:2:1: error: expected ',' or ';' before 'alist'
 alist = string.split()
 ^~~~~