/in/foo.c:1:1: warning: data definition has no type or storage class
 a=list(map(int,input().split()))
 ^
/in/foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
/in/foo.c:1:3: warning: implicit declaration of function 'list' [-Wimplicit-function-declaration]
 a=list(map(int,input().split()))
   ^~~~
/in/foo.c:1:8: warning: implicit declaration of function 'map' [-Wimplicit-function-declaration]
 a=list(map(int,input().split()))
        ^~~
/in/foo.c:1:12: error: expected expression before 'int'
 a=list(map(int,input().split()))
            ^~~
/in/foo.c:2:1: error: expected ',' or ';' before 's'
 s=0
 ^