题解 | #汽水瓶#
汽水瓶
https://www.nowcoder.com/practice/fe298c55694f4ed39e256170ff2c205f
#include <iostream> using namespace std; int qishui(int n){ if (n==1){ return 0; } else if(n==2){ return 1; } else{ return n/3 + qishui(n/3+n%3); } } int main() { int n; while (cin>>n){ if (n==0) break; cout<<qishui(n)<<endl; } }