Найти суммы чисел в первом и последнем столбцах и сравнить их- Basic(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"