В массиве в(4,4) записать нуль на месте всех элементов, которые меньше 3. вывести исходный и новый массивы — QBasic(Бейсик)

CLS
n = 4
DIM a(n, n)
FOR i = 1 TO n
    FOR j = 1 TO n
        PRINT "vvedite a("; i; ","; j; ")"
        INPUT a(i, j)
    NEXT
NEXT
PRINT "matrica"
FOR i = 1 TO n
    FOR j = 1 TO n
        PRINT a(i, j);
    NEXT
    PRINT
NEXT
FOR i = 1 TO n
    FOR j = 1 TO n
        IF a(i, j) < 3 THEN a(i, j) = 0
    NEXT
NEXT
PRINT "new matrica"
FOR i = 1 TO n
    FOR j = 1 TO n
        PRINT a(i, j);
    NEXT
    PRINT
NEXT