INT FUNC Max(INT a,b)
  IF a>b THEN RETURN (a) FI
RETURN (b)

PROC Main()
  DEFINE ROWCOUNT="18"
  INT i,row,len,a,b
  INT ARRAY rows(ROWCOUNT)
  INT ARRAY data=[
                            55
                          94 48
                         95 30 96
                       77 71 26 67
                      97 13 76 38 45
                    07 36 79 16 37 68
                   48 07 09 18 70 26 06
                 18 72 79 46 59 79 29 90
                20 76 87 11 32 07 07 49 18
              27 83 58 35 71 11 25 57 29 85
             14 64 36 96 27 11 58 56 92 18 55
           02 90 03 60 48 49 41 46 33 36 47 23
          92 50 48 02 36 59 42 79 72 20 82 77 42
        56 78 38 80 39 75 02 71 66 66 01 03 55 72
       44 25 67 84 71 67 11 61 40 57 58 89 40 56 36
     85 32 25 85 57 48 84 35 47 62 17 01 01 99 89 52
    06 71 28 75 94 48 37 10 23 51 06 48 53 18 74 98 15
  27 02 92 23 08 71 76 84 15 52 92 63 81 10 44 10 69 93]

  row=0 len=1
  FOR i=0 TO ROWCOUNT-1
  DO
    rows(i)=row
    row==+len len==+1
  OD

  row=ROWCOUNT-2
  WHILE row>=0
  DO
    len=row+1
    FOR i=0 TO len-1
    DO
      a=data(rows(row+1)+i)
      b=data(rows(row+1)+i+1)
      data(rows(row)+i)==+Max(a,b)
    OD
    row==-1
  OD

  PrintI(data(0))
RETURN