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#include <bits/stdc++.h>
using namespace std;
double n, m, suma=0,prosek,brElemenata, niz[100][100],mx=0;
int main() {
cin >> n >> m;
for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
        cin >> niz[i][j];
    }
}

for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= m; j++) {
        if (i%2==0) {
            suma+=niz[i][j];
            brElemenata++;
        }
        if (j%2!=0) {
            mx = max(mx, niz[j][i]);
        }
    }
}
double prosek = suma/brElemenata;
cout << prosek << "\n" << mx;
///////////////////////////////////////





return 0;
}