/in/foo.c: In function 'main':
/in/foo.c:47:10: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int (*)[10000]' [-Wformat=]
  scanf("%d %d", &x1, &n1);
          ^
/in/foo.c:48:13: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int (*)[10000]' [-Wformat=]
     scanf("%d %d", &x2, &n2);                          //   
             ^