/in/foo.c: In function 'main':
/in/foo.c:18:20: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'long int' [-Wformat=]
   18 |         printf("%lld",min);
      |                 ~~~^  ~~~
      |                    |  |
      |                    |  long int
      |                    long long int
      |                 %ld
/in/foo.c:9:16: warning: 'i' is used uninitialized [-Wuninitialized]
    9 |         while(i>0)
      |               ~^~
/in/foo.c:5:25: note: 'i' was declared here
    5 |     long long int x1,x2,i,xx1,xx2;
      |                         ^