class M{
static int c(int a,int b){int r=0;for(;a<=b;)r+=(""+a++).contains("5")?0:1;return r;}
public static void main
(String[] a
){ }
}
Y2xhc3MgTXsKICBzdGF0aWMgaW50IGMoaW50IGEsaW50IGIpe2ludCByPTA7Zm9yKDthPD1iOylyKz0oIiIrYSsrKS5jb250YWlucygiNSIpPzA6MTtyZXR1cm4gcjt9CgogIHB1YmxpYyBzdGF0aWMgdm9pZCBtYWluKFN0cmluZ1tdIGEpewogICAgU3lzdGVtLm91dC5wcmludGxuKGMoMSwgOSkpOwogICAgU3lzdGVtLm91dC5wcmludGxuKGMoNCwgMTcpKTsKICB9Cn0=