The output I want is: 

output

@NS500278:42:HC7M3AFXX:3:21604:26458:18476 2:N:0:AGTGGTCA
AAAAAAAAACAGATATTTGCACTAGGCATTATAAATAACATCAATTAAGTAAAAAAATTA
+
AAAAAEEEEAEEEEEEEEEE/AEEEEEEEEEEEE
	 1:R1.txt         1:R2.txt      count:2