/in/foo.c: In function 'checkstate':
/in/foo.c:27:28: warning: 'return' with a value, in function returning void
   if ((a&0x1F)>20) {return 0;}
                            ^
/in/foo.c:23:6: note: declared here
 void checkstate(uLL a)
      ^~~~~~~~~~
/in/foo.c:29:9: warning: 'return' with a value, in function returning void
  return 1;
         ^
/in/foo.c:23:6: note: declared here
 void checkstate(uLL a)
      ^~~~~~~~~~
/in/foo.c: At top level:
/in/foo.c:33:5: warning: built-in function 'exp' declared as non-function
 uLL exp[20][20],fac[20],fac2[20][20],table[100];
     ^~~
/in/foo.c: In function 'ini':
/in/foo.c:59:36: warning: unused variable 'ans' [-Wunused-variable]
  uLL *s3,*f3,*p3,t,t1,t2,ans1,ans2,ans;
                                    ^~~
/in/foo.c:59:31: warning: unused variable 'ans2' [-Wunused-variable]
  uLL *s3,*f3,*p3,t,t1,t2,ans1,ans2,ans;
                               ^~~~
/in/foo.c:59:26: warning: unused variable 'ans1' [-Wunused-variable]
  uLL *s3,*f3,*p3,t,t1,t2,ans1,ans2,ans;
                          ^~~~
/in/foo.c:59:23: warning: unused variable 't2' [-Wunused-variable]
  uLL *s3,*f3,*p3,t,t1,t2,ans1,ans2,ans;
                       ^~
/in/foo.c:59:20: warning: unused variable 't1' [-Wunused-variable]
  uLL *s3,*f3,*p3,t,t1,t2,ans1,ans2,ans;
                    ^~
/in/foo.c:59:18: warning: unused variable 't' [-Wunused-variable]
  uLL *s3,*f3,*p3,t,t1,t2,ans1,ans2,ans;
                  ^
/in/foo.c: In function 'main':
/in/foo.c:233:16: warning: unused variable 'c' [-Wunused-variable]
  uLL i,j,k,a,b,c;
                ^
/in/foo.c:233:10: warning: unused variable 'k' [-Wunused-variable]
  uLL i,j,k,a,b,c;
          ^
/in/foo.c:233:8: warning: unused variable 'j' [-Wunused-variable]
  uLL i,j,k,a,b,c;
        ^
/in/foo.c:233:6: warning: unused variable 'i' [-Wunused-variable]
  uLL i,j,k,a,b,c;
      ^