# Arup Guha
# 9/3/2020
# Voting Part A

# Get status of both candidates.
votesA = int(input("How many votes does candidate A have?\n"))
votesB = int(input("How many votes does candidate B have?\n"))

# We win by adding 1 to the difference.
print("Candidate A needs", votesB-votesA+1, "number of votes to win.")