//Problem link>>http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=1068
#include <bits/stdc++.h>
using namespace std ;
int main ()
{
long long n , sum ,cnt ,i ;
while (cin>>n)
{
sum=0 ; cnt=0 ;
for (i=0 ; ; i++)
{
sum=(sum*10+1)%n ;
if (sum==0) break ;
cnt++ ;
}
cout<<++cnt<<endl ;
}
return 0 ;
}
#include <bits/stdc++.h>
using namespace std ;
int main ()
{
long long n , sum ,cnt ,i ;
while (cin>>n)
{
sum=0 ; cnt=0 ;
for (i=0 ; ; i++)
{
sum=(sum*10+1)%n ;
if (sum==0) break ;
cnt++ ;
}
cout<<++cnt<<endl ;
}
return 0 ;
}
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