#!/usr/bin/env python3



content = open('input', 'r').readlines()
depthInc = 0
lastDepth = 9999
for line in content:
    depth = int(line.strip())
    if depth > lastDepth:
        depthInc += 1
    lastDepth = depth
print(depthInc)

if __name__ == "__main__":
    main()