/* symmetrikos pinakas */
#include <iostream> 
#include <cmath>
using namespace std;
int main(int argc, char *argv[])
{ int i,j,r,c,N;
  int symmetric;
  int breakpoint;
  cout<<"Dose thn diastash N: ";
  cin>>N;  
  int A[N][N];
  for (i = 0; i < N; i++) {
      cout<<"Dose "<<i<<" grammh: ";
      for (int j = 0; j < N; j++) cin>>A[i][j];
       }   
  
  // elegxos - prwtos tropos
  // elegxoume kathe stoixeio katw apo thn diagwnio 
  // me to antistoixo symemtriko tou kai stamatame sthn prwth diafora
  // kai me xrhsh break
  symmetric=1;
  breakpoint=0;
  for (i = 0; i < N; i++) {
    if (breakpoint) break;
    for (j = 0; j < i;   j++) 
      if (A[i][j]!=A[j][i]) {
         cout<<"Oxi symetrikos-tropos1. A["<<i<<"]["<<j<<"]!=A["<<j<<"]["<<i<<"]"<<endl;
         breakpoint=1; symmetric=0; break;}
    }     
  if (symmetric) cout<<"Symetrikos-tropos1."<<endl;
  // elegxos - deyteros tropos 
  // ws anw alla me metablhth elegxoy twn while 
  symmetric=1;
  r=0;
  while ((r<N) && symmetric) {
    c=0;    
    while ((c<r) && symmetric) {
      if (A[r][c]!=A[c][r]) {
         cout<<"Oxi symetrikos-tropos2. A["<<r<<"]["<<c<<"]!=A["<<c<<"]["<<r<<"]"<<endl;
         symmetric=0;}
      c++;   
     } 
    r++;  
    }
 if (symmetric) cout<<"Symetrikos-tropos2."<<endl;  
  // elegxos - tritos tropos
  // elegxoume oles tis theswis tou pinaka 
  // kai briskoume oles tis diafores
  symmetric=1;
  for (i = 0; i < N; i++) {
    for (j = 0; j < i;   j++) 
      if (A[i][j]!=A[j][i]) {
         cout<<"Oxi symetrikos-tropos3. A["<<i<<"]["<<j<<"]!=A["<<j<<"]["<<i<<"]"<<endl;
         symmetric=0;}
    }     
  if (symmetric) cout<<"Symetrikos-tropos3."<<endl; 
  
 system("PAUSE");
 return 0;
}