84 lines
2.3 KiB
COBOL
84 lines
2.3 KiB
COBOL
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identification division.
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program-id. day06.
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data division.
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working-storage section.
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01 input-line pic x(100).
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01 action pic x(10).
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01 coords pic x(100).
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01 start-coords pic x(100).
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01 end-coords pic x(100).
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01 start-x pic 9(10).
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01 end-x pic 9(10).
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01 start-y pic 9(10).
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01 end-y pic 9(10).
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01 x pic 9(10).
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01 y pic 9(10).
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01 temp pic 9.
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01 matrix-table.
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05 occurs 1000 times.
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10 occurs 1000 times.
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15 matrix pic 9 value 0.
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procedure division.
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accept input-line.
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perform input-loop-para until input-line = SPACE.
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* Count the lit lights
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move 0 to x.
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inspect matrix-table tallying x for all '1'.
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display x.
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stop run.
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input-loop-para.
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display input-line.
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if input-line(1:7) = "turn on" then
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move "turn on" to action
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move input-line(9:) to coords
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end-if.
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if input-line(1:8) = "turn off" then
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move "turn off" to action
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move input-line(10:) to coords
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end-if.
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if input-line(1:7) = "toggle" then
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move "toggle" to action
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move input-line(8:) to coords
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end-if.
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unstring coords delimited by " through "
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into start-coords, end-coords.
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unstring start-coords delimited by "," into start-x, start-y
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unstring end-coords delimited by "," into end-x, end-y
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move start-y to y.
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perform outer-loop-para until y > end-y.
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accept input-line.
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outer-loop-para.
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move start-x to x.
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perform inner-loop-para until x > end-x.
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add 1 to y.
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inner-loop-para.
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if action = "turn on" then
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move 1 to matrix(y + 1, x + 1).
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if action = "turn off" then
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move 0 to matrix(y + 1, x + 1).
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if action = "toggle" then
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move 1 to temp
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subtract matrix(y + 1, x + 1) from temp
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move temp to matrix(y + 1, x + 1)
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end-if.
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add 1 to x.
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