OJ-Problems-Source/QUSTOJ/1455.cpp
2016-05-26 07:52:33 +08:00

25 lines
348 B
C++

#include <cstdio>
using namespace std;
int main()
{
long n;
while(scanf("%ld",&n)==1&&n!=0)
{
if(n==1)
{
printf("0\n");
continue;
}
int t=1;
--n;
while(n>=3)
{
n=n/3;
t++;
}
printf("%d\n",t);
}
return 0;
}