#include <stdio.h>
#include <stdlib.h>

int main()
{
int n,m;
int i,j;
float A[50][30];
printf("Dati n si m:");
scanf("%d %d",&n,&m);
puts ("Dati elementele");
for (i=0;i<n;i++)
{
    for (j=0;j<n;j++)
        scanf ("%f", &A[i][j]);
}
puts ("Elementele tabloului");
for (i=0;i<n;i++)
{
    for  (j=0;j<m;j++)
        printf("%.3f\t",A[i][j]);
    printf ("\n");

}
printf ("Schimbarea primei linii cu ultima\n");

for(i = 0; i < m; i++){
    float tmp;
    tmp = A[0][i];
    A[0][i] = A[n-1][i];
    A[n-1][i] = tmp;
}

for (i=0;i<=n;i++)
{
    for  (j=0;j<m;j++)
        printf("%.3f\t",A[i][j]);
    printf ("\n");

}

return 0;

}