#include <iostream>
using namespace std;
int v[100][100];
int main()
{
int n, i, j, suma=0, maxim;
cout << " n= "; cin >> n;
cout << " introdu " << n*n << " numere reale \n";
for (i=0; i<n; ++i)
{
for (j=0; j<n; ++j)
cin >> v[i][j];
}
maxim=v[0][n-1];
for (i=0; i<n; ++i)
{
for (j=0; j<n; ++j)
{
if (i!=j) suma+=v[i][j];
if (i+j==n-1 && v[i][j]>maxim) maxim=v[i][j];
}
}
cout << " suma= " << suma << "\n;
cout << "maximul = " << maxim;
return 0;
}