/in/foo.cc: In function 'void find1(int, int)':
/in/foo.cc:9:6: warning: unused variable 'i' [-Wunused-variable]
  int i,j;
      ^
/in/foo.cc:9:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^
/in/foo.cc: In function 'void find2(int, int, int)':
/in/foo.cc:35:6: warning: unused variable 'i' [-Wunused-variable]
  int i,j;
      ^
/in/foo.cc:35:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:59:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,f,o,s;
        ^