/in/foo.c: In function 'main':
/in/foo.c:5:33: warning: unused variable 'k2' [-Wunused-variable]
  int a[10000],b[10000],n1,n2,k1,k2,i;
                                 ^~
/in/foo.c:5:30: warning: unused variable 'k1' [-Wunused-variable]
  int a[10000],b[10000],n1,n2,k1,k2,i;
                              ^~
/in/foo.c: In function 'FindMaxs':
/in/foo.c:20:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k=0;
          ^
/in/foo.c:20:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,k=0;
        ^
/in/foo.c:32:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^