n,x,y = map(int,input().split())
mod = 998244353

if x < y:
    start = x+1
    if x+1 == y:
        if y == n:
            print(1)
        else:
            print(0)
        exit()

    end = y-1

    dif = end-start

else:
    start = x-1
    if x-1 == y:
        if y == 1:
            print(1)
        else:
            print(0)
        exit()
    end = y+1
    dif = start-end

if y == 1 or y == n:
    dif += 1
if x == 1 or x == n:
    dif += 1
    
dp = [0]*(dif+1)
dp[0] = 1
for i in range(dif):
    dp[i+1] += dp[i]
    dp[i+1] %= mod
    if i+3 <= dif:
        dp[i+3] += dp[i]
        dp[i+3] %= mod
print(dp[-1])