A. Countdown | Codeforces Round

[@MangoLassiYT]

but what does "The clock will show leading zeroes if the number is smaller than 10n−1" mean

[@abhishekanand5898]

Last index me hi kyun lana pdega...why cant we decrease every non zero char to 0??? And what is the significance of that 10^n-1 given in the question??

[@HiteshTripathi]

Bro complete string is a number ....... to last index pe laoge tabhi to -1 karne se value kam hogi ..... (one th place)

[@abhishekanand5898]

@@HiteshTripathi Got it bhai...I misread it as decrease any digit by 1 and but it was decreasing number by 1.

[@saurabhpandey5118]

You want the clock to show 0 with as few operations as possible. In an operation, you can do one of the following: 1 decrease the number on the clock by 1, or 2 swap two digits (you can choose which digits to swap, and they don't have to be adjacent). here in 2nd operation we cannot swap adjecent digits but no one is talking about it ! plzz reply am not getting the exact thing or it is something that was some mistake from creators and now no one is talking about it since they got ac?

[@HiteshTripathi]

It simply means they can be or cannot be adjacent ,

[@ankitpal7793]

Can you please tell whats with that -'0' in s[I]-'0'

[@HiteshTripathi]

Convert char to int

[@faroukslefteye2271]

Why do you guys randomly start talking in hindu mid-video ?