Doubt related to constraint

What to do for those problems where all constraints are followed in solution but though it is giving wrong answer for a user and same code giving correct answer for other user ?Does codechef block any user for submitting large number of wrong submission ?

There’s no discrimination among users regarding their solutions. Correct code will always give AC nit matter how many WA had been there.

The only restriction set by codechef is that maximum number of submissions to a problem by a user must not exceed 500 (200 for challenge problem).

No, codechef doesnt block users due to large number of WAs.