BEGIN{
freq[1]=1049
freq[2]=1182
freq[3]=1464
freq[4]=1467
freq[5]=2930
freq[6]=3006
i=1
}

{
ch3f[i]=$1
i++
}

END{
i = 1
if (i <= 6){
	sum = sum + (freq[i] - ch3f[i])**2
  }
printf("%3.1f \n", sqrt(sum))
}