V oryvrir n = sbhe, o = guvegrra jbexf va guvf pnfr. Fvapr vg pna or snpgberq gjb jnlf, Crgre qbrfa'g xabj gur ahzoref. Fnenu xabjf ur qbrfa'g xabj, orpnhfr gurve fhz vf abg gur fhz bs gjb cevzrf. Gur bgure snpgbevat, (gjb, gjragl fvk), unf n fhz bs gjragl rvtug juvpu vf gur fhz bs gjb cevzrf, fb Fnenu'f fgngrzrag zrnaf gung ur pna ryvzvangr gung bar. Fb, Crgre xabjf jung vg vf. V ybbxrq ng bgure jnlf bs jevgvat friragrra nf gur fhz bs gjb vagrtref sebz gjb gb avargl avar, naq guvf jnf gur bayl bar gung ranoyrq Crgre gb havdhryl qrgrezvar uvf snpgbevat tvira Fnenu'f vasbezngvba.
Very well done, although it seems you guessed the answer and then proved that that answer worked. How did you come up with that solution?
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