uses
crt;
const
max=50;
var
a:array[1..max,1..max] of integer;
i,j,n,s,k:integer;
begin
writeln('wvedite razmernost matrici');
readln(n);
writeln('wvedite matricu ',n,' x ',n);
for i:= 1 to n do
begin
for j:= 1 to n do
read(a[i,j]);
end;
s:=0;
k:=0;
for i:= 1 to n do
begin
for j:= 1 to n do
if (j mod 2<>0) and (i mod 2<>0) then
begin
s:=a[i,j]+s;
k:=k+1
end;
end;
s:=round(s/k);
writeln('sredne arifmet znashenie s neshetnimi indeksami ravno ', s);
readkey
end.
