Code Bot compiler - Онлайн компилятор C. This code defines a function `gt` that takes a number `x` and returns a count. It finds the smallest power of 3 greater than `x`, then decides whether to subtract `x` from that power or subtract that power divided by 3 from `x`, and recursively counts s...

Онлайн компилятор C

#include <stdio.h> long long a,ans=0,now,tmp; long long gt(long long x) { //printf("%lld\n",x); if(x==0) return 0; tmp=1; while(tmp<=x)tmp*=(long long)3; if((tmp/2)<x) return gt(tmp-x)+1; return gt(x-(tmp/3))+1; } int main() { scanf("%lld",&a); printf("%lld",gt(a)); return 0; }

This code defines a function `gt` that takes a number `x` and returns a count. It finds the smallest power of 3 greater than `x`, then decides whether to subtract `x` from that power or subtract that power divided by 3 from `x`, and recursively counts steps. The program reads a number and prints the result of `gt`.

- The condition `if((tmp/2)<x)` is unusual. Think about what the midpoint between `tmp/3` and `tmp` is, and whether comparing to `tmp/2` correctly decides which subtraction is closer to zero.
- The variable `tmp` is global and reused across recursive calls. Consider how this might affect the value of `tmp` when the function calls itself, especially in the `else` branch.