coroana te rog!
#include<iostream>
using namespace std;
int main(){
int A[21][21],n,m; // matricea de 20, se scrie 21 in caz ca indexezi de la 1
cin>>n>>m; //numar linii, numar coloane
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
cin>>A[i][j];
return 0;
}