#write a program that first reads the number days to examine the weather
#then for each day the program reads a temperature and the rain indicator
#(1- rain, 0 - no rain)
#the program counts the number of days with no rain and temperature 75 or above
#and finds the average temperature for these days
num=int(input("enter number of days "))
i=0
count_warm_no_rain=0
sum=0
while(i<num):
	temp=float(input("enter temperature "))
	rain=int(input("enter 1 for rain and 0 for no rain "))
	if(temp>=75 and rain==0):
		count_warm_no_rain=count_warm_no_rain+1
		sum=sum+temp
	i=i+1
if(count_warm_no_rain>0):
	ave=sum/count_warm_no_rain
	print("there are",count_warm_no_rain,"days with no rain and warm")
	print("average for these days is", ave)
else:
	print("no warm days with no rain")