const
n= 5;
type
tMatrix = array [1..n,1..n] of integer;
function NextZeroInRow(A: tMatrix; i,j: integer): integer;
{returns position of next zero in a row i of matrix A starting at position j; if no zeros found, will return 0}
begin
while (j<=n) and (A[i,j]<>0) do Inc(j);
NextZeroInRow:= j mod (n+1)
end;
var
A: tMatrix;
f: text;
i,j: integer;
begin
Assign(f,'in.txt');
Reset(f);
for i:=1 to n do begin
for j:=1 to n do read(f,a[i,j]);
readln(f)
end;
Close(f);
for i:=1 to n do begin
for j:=1 to n do write(a[i,j]:4);
writeln
end;
for i:=2 to n do begin
j:=n-i+2;
while j>0 do begin
j:= NextZeroInRow(A,i,j);
if j>0 then begin
writeln('Zero element found at position ',i,',',j);
Inc(j)
end
end
end;
writeln('Search done.');
readln
end.