PROGRAM N1;
VAR N,S:REAL;
BEGIN
S:=0;
N:=2;
WHILE N <= 100 DO
BEGIN
S:=S+N;
N:=N+2;
END;
WRITELN ('СУМА РАВНА',S);
END.
VAR N,S:REAL;
BEGIN
S:=0;
N:=2;
WHILE N <= 100 DO
BEGIN
S:=S+N;
N:=N+2;
END;
WRITELN ('СУМА РАВНА',S);
END.