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- #include <iostream>
- #include <iomanip>
- using namespace std;
- int f, c, **pMatriz, sum=0;
- float cont=0;
- void fill()
- {
- do{
- cin >> f;
- }while(f < 2 || f > 20);
- do{
- cin >> c;
- }while(c < 2 || c > 20);
- pMatriz = new int *[f];
- for(int i=0; i<f; i++)
- pMatriz[i] = new int [c];
- for(int i=0; i<f; i++)
- {
- for(int j=0; j<c; j++)
- {
- cin >> *(*(pMatriz+i)+j);
- }
- }
- }
- void print()
- {
- for(int i=0; i<f; i++)
- {
- for(int j=0; j<c; j++)
- {
- cout << *(*(pMatriz+i)+j)<<" ";
- }
- cout<<endl;
- }
- }
- void promed()
- {
- for(int i=0; i<(f-1); i++)
- {
- sum = sum + *(*(pMatriz+(f-1))+i);
- cont = cont + 1;
- }
- for(int i=0; i<(f-1); i++)
- {#include <iomanip>
- sum = sum + *(*(pMatriz+i)+0) + *(*(pMatriz+i)+(c-1));
- cont = cont + 2;
- }
- cout << setprecision(1) << (sum / cont);
- }
- int main() {
- fill();
- // print();
- promed();
- for(int i=0; i<f; i++)
- delete[] pMatriz[i];
- return 0;
- }
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