A.py

# (C) Júlio Guedes
# ATAL 2019.2
 
letters = input()
hello = "hello"
pointer = 0
 
for l in letters:
	if pointer < len(hello):
		if (l == hello[pointer]):
			pointer += 1
 
if (pointer == len(hello)):
	print("YES")
else:
	print("NO")

C.py

# coding: utf-8
# (C) Júlio Barreto
# Lineland Mail - Codeforces
 
n = int(raw_input())
c = map(int, raw_input().split())
 
for city in range(len(c)):
    if city == 0:
        print abs(c[city + 1] - c[city]), abs(c[-1] - c[city])
    elif city == len(c) - 1:
        print abs(c[city] - c[city-1]), abs(c[city] - c[0])
    else:
        mini = min(c[city] - c[city-1], c[city+1] - c[city])
        maxi = max(c[-1] - c[city], c[city] - c[0])
        print mini, maxi

D.py

# coding: utf-8
# (C) Júlio Guedes
# ATAL 2019.2
 
s = raw_input()
c = 26 * (len(s) + 1) - len(s)
print c