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f = io , open ( grid . txt , r ) io . input ( f ) print ( io
fioopengridtxtr ioinputf printioreada io close cal command io read if command "showco thed QA local col tonumber io if col then showColumngrid col else printInvalid column number else if command "showrow" then local row tonumber io read if row then showRowgrid row a Sheet exam wout mains qreturn
fioopengridtxtr
ioinputf
printioreada
io close
cal command io read
if command "showco thed QA
local col tonumber io
if col then
showColumngrid col
else
printInvalid column number
else
if command "showrow" then
local row tonumber io read
if row then
showRowgrid row
a
Sheet
exam wout mains qreturn
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