/in/foo.cc: In function 'long long int cal(int)':
/in/foo.cc:37:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,k,l;
        ^
/in/foo.cc:37:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k,l;
          ^
/in/foo.cc:37:12: warning: unused variable 'l' [-Wunused-variable]
  int i,j,k,l;
            ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:87:20: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'int' [-Wformat=]
  printf("%ld\n",ans);
                    ^
/in/foo.cc:69:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,k,l;
        ^
/in/foo.cc:69:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k,l;
          ^
/in/foo.cc:69:12: warning: unused variable 'l' [-Wunused-variable]
  int i,j,k,l;
            ^
/in/foo.cc: In function 'int search(int, int)':
/in/foo.cc:66:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^