let N: Int = Int(readLine()!)!
let MOD: Int = 1000000000

var dp: [Int] = Array(repeating: 1, count: 10)
dp[0] = 0

for _ in 1..<N {
    var next_dp: [Int] = Array(repeating: 0, count: 10)
    
    for i in 0...9 {
        if i == 0 {
            next_dp[i] = dp[1]
        }
        else if i==9 {
            next_dp[i] = dp[8]
        }
        else {
            next_dp[i] = (dp[i-1] + dp[i+1])%MOD
        }
    }
    
    dp = next_dp
}

print(dp.reduce(0,+)%MOD)