#include <iostream>

using namespace std;


int mat[100][100], n, m, i, j, maxim = -100000, minim = 100000;


int main()
{
    cout<<"n= "; cin>>n;

    cout<<"m= "; cin>>m;

    for(i = 0; i < n; i++)
    {
        for(j = 0; j < m; j++)
        {
            cout<<"mat["<<i<<"]["<<j<<"]= "; cin>>mat[i][j];
        }
    }

    for(i = 0; i < n; i++)
    {
        for(j = 0; j < m; j++)
        {
            if(mat[i][j] > maxim)
                maxim = mat[i][j];
            if(mat[i][j] < minim)
                minim = mat[i][j];
        }
    }

    cout<<"Maximul este "<<maxim<<endl;

    cout<<"Minimul este "<<minim<<endl;

    cout<<"Diferenta = "<<maxim - minim;

    return 0;
}