"""
[25205: 경로당펑크 2077](https://www.acmicpc.net/problem/25205)
Tier: Bronze ??
Category: 구현
"""
def solution():
a = "qwertasdfgzxcv"
n = int(input())
s = input()
if s[-1] in a:
return 1
return 0
if __name__ == '__main__':
print(solution())