/in/foo.c: In function 'main':
/in/foo.c:6:26: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
     long long n; scanf("%d",&n);
                          ^
/in/foo.c:9:11: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
   scanf("%d",&a[i]);
           ^
/in/foo.c:12:11: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%d",a[n-1]);
           ^