#nullable enable #region var _input = Array.Empty(); var _iter = 0; string String() { while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Split(' '), 0); return _input[_iter++]; } T I() where T : IParsable => T.Parse(String(), null); #endregion const int Mod = 998244353; var n = String(); var l = n.Length; var dp = new long[4]; dp[0] = 1; for (var di = 1; di <= l; di++) { var x = n[^di] - '0'; var ep = new long[4]; for (var i = 0; i < 10; i++) { var fd = i == 8 ? 2 : 0; if (i < x) { ep[0 + fd] += dp[0] + dp[1]; ep[2] += dp[2] + dp[3]; } else if (i == x) { ep[0 + fd] += dp[0]; ep[1 + fd] += dp[1]; ep[2] += dp[2]; ep[3] += dp[3]; } else { ep[1 + fd] += dp[0] + dp[1]; ep[3] += dp[2] + dp[3]; } } dp = ep; for (var i = 0; i < 4; i++) dp[i] %= Mod; } Console.WriteLine(dp[2]);