Найти максимальный элемент вещественной матрицы и указать его координаты — QBasic(Бейсик)

INPUT m
INPUT n
DIM a(m, n)
FOR i = 1 TO m
    FOR j = 1 TO n
        a = INT(RND(100))
    NEXT
NEXT
FOR i = 1 TO m
    FOR j = 1 TO n
        PRINT a(i, j), " ";
    NEXT
    PRINT
NEXT
max = a(1, 1)
x = 1
y = 1
FOR i = 1 TO m
    FOR j = 1 TO n
        IF a(i, j) > max THEN max = a(i, j): x = i: y = j
    NEXT
NEXT
PRINT max, x, y