cf 114A

#include<stdio.h>

int main()
{
    long long k, l, cnt = 0;
    scanf("%lld %lld", &k, &l);

    while(1)
    {
        if(l % k != 0) break;
        l /= k;
        cnt++;
        if(l == 1 || l == 0) break;
    }
    if(l == 1) printf("YES\n%lld\n", cnt - 1);
    else printf("NO\n");
}