//@version=3
study(title='MARKET', overlay=true)

src = close

sma9 = sma(src, input(9, title='9 SMA'))
sma20 = sma(src, input(20, title='20 SMA'))
sma30 = sma(src, input(30, title='30 SMA'))
sma50 = sma(src, input(50, title='50 SMA'))

buy920 = close > sma9 and close > sma20? lime : na
bgcolor(buy920, transp=85, show_last=10, title='BUY /9 /20')

sell920 = close < sma9 and close < sma20? red : na
bgcolor(sell920, transp=80, show_last=10, title='SELL \9 \20')

long3050 = crossover(sma30, sma50)
plotshape(series=long3050, title='LONG 30X50', style=shape.triangleup, location=location.belowbar, color=lime, text='LONG 30X50', transp=0, size=size.small)

short3050 = crossunder(sma30, sma50)
plotshape(series=short3050, title='SHORT 30X50', style=shape.triangledown, location=location.abovebar, color=red, text='SHORT 30X50', transp=0, size=size.small)