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FOR I = 1 to 13000 FOR J = 1 TO 13000 ... NEXT K NEXT J NEXT I
FOR I = 1 to 28 FOR J = 1 TO 28 ... NEXT K NEXT J NEXT I
FOR I = 1 to 28 IF 13000 = I*I*I THEN PRINT "CUBE ROOT IS ", I NEXT I