/in/foo.c: In function 'main':
/in/foo.c:12:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
         scanf("%d",&n);
                 ^
/in/foo.c:16:21: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
             scanf("%d",&a[j]);
                     ^
/in/foo.c:18:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long long int *' [-Wformat=]
         scanf("%d",&k);
                 ^
/in/foo.c:21:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
         printf("%d\n",r);
                  ^