Найти суммы чисел в первом последнем столбцах и сравнить их. 4х4. 4030 0302 2010 0104 — QBasic(Бейсик)

DATA 4,0,3,0,0,3,0,2,2,0,1,0,0,1,0,4
DIM a(4, 4)
FOR i = 1 TO 4
    FOR j = 1 TO 4
        READ a(i, j)
    NEXT
NEXT

FOR i = 1 TO 4
    FOR j = 1 TO 4
        PRINT a(i, j); " ";
    NEXT
    PRINT
NEXT

FOR i = 1 TO 4
    s1 = s1 + a(i, 1)
    s4 = s4 + a(i, 4)
NEXT

IF s1 > s4 THEN PRINT " summa 1 bolshe" ELSE IF s4 > s1 THEN PRINT "summa 4 bolshe" ELSE PRINT " summy ravny"