B1:
Program NN;
Uses crt;
Var A: array[1..50] of longint;
i,s: longint;
Begin
Clrscr;
s:=0;
For i:=1 to 50 do
Begin
Read(A[i]);
If A[i] mod 2 = 0 then s:=s+A[i];
End;
Write('S = ',s);
Readln
End.
B2:
Program NN;
Uses crt;
Var A: array[1..50] of longint;
n,i,s: longint;
Begin
Clrscr;
Write('Nhap n: '); Readln(n);
s:=0;
For i:=1 to n do
Begin
Read(A[i]);
If A[i] mod 2 <> 0 then s:=s+A[i];
End;
Write('S = ',s);
Readln
End.