#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int n,m; cin>>n>>m; double a[n],b[m],sum=0,p=0,s=0; for(int i=0;i<n;i++){ cin>>a[i]; sum+=a[i]; } for(int i=0;i<m;i++){ cin>>b[i]; s+=b[i]; } p=s/m; printf("%.2lf %.2lf\n",sum/n,p); return 0; }