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Cod sursa(job #463915)
var v:array[1..100,1..100]of integer;
w:array[1..100]of byte;
n,i,j:byte;
l,c:integer;
begin
assign(input,'lacate.in');reset(input);
assign(output,'lacate.out'); rewrite(output);
read(n);
writeln(n*(n-1) shr 1,' ',n-1);
c:=1; l:=n*(n-1)shr 1;
for i:=1 to n do begin
for j:=1 to n-1 do begin
v[i,j]:=c;
inc(w[c]);
inc(c);
while ((w[c]=2)or(c>l))and((i<>n)or(j<>n-1)) do begin
inc(c);
if c>l then c:=1;
end;
end;
c:=v[i,1]+1;
if c>l then c:=1;
while (w[c]=2)and(i<>n) do begin
inc(c);
if c>l then c:=1;
end;
end;
for i:=1 to n do begin
for j:=1 to n-1 do write(v[i,j],' ');
writeln;
end;
close(output);
end.