foo.c: In function 'main':
foo.c:44:14: warning: unknown conversion type character ' ' in format [-Wformat=]
   44 |     scanf(" % d & d % d", &n1, &n2, &n3);
      |              ^
foo.c:44:22: warning: unknown conversion type character ' ' in format [-Wformat=]
   44 |     scanf(" % d & d % d", &n1, &n2, &n3);
      |                      ^
foo.c:44:11: warning: too many arguments for format [-Wformat-extra-args]
   44 |     scanf(" % d & d % d", &n1, &n2, &n3);
      |           ^~~~~~~~~~~~~~
foo.c: In function 'Setlner':
foo.c:27:1: warning: control reaches end of non-void function [-Wreturn-type]
   27 | }
      | ^

[Hydro](https://hydro.ac)提供评测服务