#include <bits/stdc++.h>
using namespace std;
int main()
{
char input[1002];
int i,j,l,sum;
while(1)
{
gets(input);
sum=0;
l=strlen(input);
if(input[0]=='0' and l==1) break;
for(i=0;i<l;i+=2)
{
sum+=input[i]-'0';
}
for(i=1;i<l;i+=2)
{
sum-=input[i]-'0';
}
if((sum) % 11) printf("%s is not a multiple of 11.\n",input);
else
printf("%s is a multiple of 11.\n",input);
}
return 0;
}