in current rule, ppl is easy to cheat in contest if they have 4 ppl in a group. so what if we introduce a new rule:\nQ1 is unlocked at the beginning, if we solve Q1 then Q2 unlock, etc. if ppl can\'t solve current question, the next question will be unlocked after 5 mins, that means Q2 Q3 Q4 will be unlocked after 5mins  10mins and 15mins even though they didn\'t solve the previous question.

in current rule, ppl is easy to cheat in contest if they have 4 ppl in a group. so what if we introduce a new rule:\nQ1 is unlocked at the beginning, if we solv