import sys
InterestingInstructions = 0
input = open(sys.argv[1], "r")
for line in input:
i = line.find(";")
if i >= 0:
line = line[:i]
if "%interesting" in line:
InterestingInstructions += 1
print(InterestingInstructions)
if InterestingInstructions == 5:
sys.exit(0) # interesting!
sys.exit(1)