import std.conv, std.functional, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.container, std.math, std.numeric, std.range, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } real readReal() { return readToken.to!real; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } bool isKadomatsu(int a, int b, int c) { return (a != b && a != c && b != c && ((a < b && b > c) || (a > b && b < c))); } enum LIM = 16; long K; void main() { auto dp = new long[][][](LIM, 10, 10); foreach (a; 0 .. 10) foreach (b; 0 .. 10) { dp[0][a][b] = 1; } foreach (n; 1 .. LIM) { foreach (a; 0 .. 10) foreach (b; 0 .. 10) { foreach (c; 0 .. 10) { if (isKadomatsu(a, b, c)) { dp[n][a][b] += dp[n - 1][b][c]; } } } } try { for (; ; ) { const numCases = readInt(); foreach (caseId; 0 .. numCases) { K = readLong(); long k = K; foreach (n; 3 .. LIM) { foreach (a; 1 .. 10) foreach (b; 0 .. 10) { if (k > dp[n - 2][a][b]) { k -= dp[n - 2][a][b]; } else { auto x = new int[n]; x[0] = a; x[1] = b; foreach (i; 2 .. n) { for (x[i] = 0; x[i] < 10; ++x[i]) { if (isKadomatsu(x[i - 2], x[i - 1], x[i])) { const tmp = dp[n - 1 - i][x[i - 1]][x[i]]; if (k > tmp) { k -= tmp; } else { break; } } } assert(x[i] < 10); } foreach (i; 0 .. n) { write(x[i]); } writeln(); goto found; } } } found: } } } catch (EOFException e) { } }