Problem:


Score : 400 points

Problem Statement

A positive integer X is said to be a lunlun number if and only if the following condition is satisfied:

In the base ten representation of X (without leading zeros), for every pair of two adjacent digits, the absolute difference of those digits is at most 1.

For example, 1234, 1, and 334 are lunlun numbers, while none of 31415, 119, or 13579 is.

You are given a positive integer K. Find the K-th smallest lunlun number.

Constraints

1 \leq K \leq 10^5

All values in input are integers.

Input

Input is given from Standard Input in the following format:

K

Output

Print the answer.

Sample Input 1

15

Sample Output 1

23

We will list the 15 smallest lunlun numbers in ascending order:

1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
21,
22,
23.

Thus, the answer is 23.

Sample Input 2

1

Sample Output 2

1

Sample Input 3

13

Sample Output 3

21

Sample Input 4

100000

Sample Output 4

3234566667

Note that the answer may not fit into the 32-bit signed integer type.



Sample input:
15


Sample output:
23

Submission status: Runtime Error

Solution code:
lunlun = {1: 1, 
2: 2, 
3: 3, 
4: 4, 
5: 5, 
6: 6, 
7: 7, 
8: 8, 
9: 9, 
10: 10, 
11: 11, 
12: 12, 
13: 21, 
14: 22, 
15: 23, 
16: 32, 
17: 33, 
18: 34, 
19: 43, 
20: 44, 
21: 45, 
22: 54, 
23: 55, 
24: 56, 
25: 65, 
26: 66, 
27: 67, 
28: 76, 
29: 77, 
30: 78, 
31: 87, 
32: 88, 
33: 89, 
34: 98, 
35: 99, 
36: 100, 
37: 101, 
38: 110, 
39: 111, 
40: 112, 
41: 121, 
42: 122, 
43: 123, 
44: 210, 
45: 211, 
46: 212, 
47: 221, 
48: 222, 
49: 223, 
50: 232, 
51: 233, 
52: 234, 
53: 321, 
54: 322, 
55: 323, 
56: 332, 
57: 333, 
58: 334, 
59: 343, 
60: 344, 
61: 345, 
62: 432, 
63: 433, 
64: 434, 
65: 443, 
66: 444, 
67: 445, 
68: 454, 
69: 455, 
70: 456, 
71: 543, 
72: 544, 
73: 545, 
74: 554, 
75: 555, 
76: 556, 
77: 565, 
78: 566, 
79: 567, 
80: 654, 
81: 655, 
82: 656, 
83: 665, 
84: 666, 
85: 667, 
86: 676, 
87: 677, 
88: 678, 
89: 765, 
90: 766, 
91: 767, 
92: 776, 
93: 777, 
94: 778, 
95: 787, 
96: 788, 
97: 789, 
98: 876, 
99: 877, 
100: 878, 
101: 887, 
102: 888, 
103: 889, 
104: 898, 
105: 899, 
106: 987, 
107: 988, 
108: 989, 
109: 998, 
110: 999, 
111: 1000, 
112: 1001, 
113: 1010, 
114: 1011, 
115: 1012, 
116: 1100, 
117: 1101, 
118: 1110, 
119: 1111, 
120: 1112, 
121: 1121, 
122: 1122, 
123: 1123, 
124: 1210, 
125: 1211, 
126: 1212, 
127: 1221, 
128: 1222, 
129: 1223, 
130: 1232, 
131: 1233, 
132: 1234, 
133: 2100, 
134: 2101, 
135: 2110, 
136: 2111, 
137: 2112, 
138: 2121, 
139: 2122, 
140: 2123, 
141: 2210, 
142: 2211, 
143: 2212, 
144: 2221, 
145: 2222, 
146: 2223, 
147: 2232, 
148: 2233, 
149: 2234, 
150: 2321, 
151: 2322, 
152: 2323, 
153: 2332, 
154: 2333, 
155: 2334, 
156: 2343, 
157: 2344, 
158: 2345, 
159: 3210, 
160: 3211, 
161: 3212, 
162: 3221, 
163: 3222, 
164: 3223, 
165: 3232, 
166: 3233, 
167: 3234, 
168: 3321, 
169: 3322, 
170: 3323, 
171: 3332, 
172: 3333, 
173: 3334, 
174: 3343, 
175: 3344, 
176: 3345, 
177: 3432, 
178: 3433, 
179: 3434, 
180: 3443, 
181: 3444, 
182: 3445, 
183: 3454, 
184: 3455, 
185: 3456, 
186: 4321, 
187: 4322, 
188: 4323, 
189: 4332, 
190: 4333, 
191: 4334, 
192: 4343, 
193: 4344, 
194: 4345, 
195: 4432, 
196: 4433, 
197: 4434, 
198: 4443, 
199: 4444, 
200: 4445, 
201: 4454, 
202: 4455, 
203: 4456, 
204: 4543, 
205: 4544, 
206: 4545, 
207: 4554, 
208: 4555, 
209: 4556, 
210: 4565, 
211: 4566, 
212: 4567, 
213: 5432, 
214: 5433, 
215: 5434, 
216: 5443, 
217: 5444, 
218: 5445, 
219: 5454, 
220: 5455, 
221: 5456, 
222: 5543, 
223: 5544, 
224: 5545, 
225: 5554, 
226: 5555, 
227: 5556, 
228: 5565, 
229: 5566, 
230: 5567, 
231: 5654, 
232: 5655, 
233: 5656, 
234: 5665, 
235: 5666, 
236: 5667, 
237: 5676, 
238: 5677, 
239: 5678, 
240: 6543, 
241: 6544, 
242: 6545, 
243: 6554, 
244: 6555, 
245: 6556, 
246: 6565, 
247: 6566, 
248: 6567, 
249: 6654, 
250: 6655, 
251: 6656, 
252: 6665, 
253: 6666, 
254: 6667, 
255: 6676, 
256: 6677, 
257: 6678, 
258: 6765, 
259: 6766, 
260: 6767, 
261: 6776, 
262: 6777, 
263: 6778, 
264: 6787, 
265: 6788, 
266: 6789, 
267: 7654, 
268: 7655, 
269: 7656, 
270: 7665, 
271: 7666, 
272: 7667, 
273: 7676, 
274: 7677, 
275: 7678, 
276: 7765, 
277: 7766, 
278: 7767, 
279: 7776, 
280: 7777, 
281: 7778, 
282: 7787, 
283: 7788, 
284: 7789, 
285: 7876, 
286: 7877, 
287: 7878, 
288: 7887, 
289: 7888, 
290: 7889, 
291: 7898, 
292: 7899, 
293: 8765, 
294: 8766, 
295: 8767, 
296: 8776, 
297: 8777, 
298: 8778, 
299: 8787, 
300: 8788, 
301: 8789, 
302: 8876, 
303: 8877, 
304: 8878, 
305: 8887, 
306: 8888, 
307: 8889, 
308: 8898, 
309: 8899, 
310: 8987, 
311: 8988, 
312: 8989, 
313: 8998, 
314: 8999, 
315: 9876, 
316: 9877, 
317: 9878, 
318: 9887, 
319: 9888, 
320: 9889, 
321: 9898, 
322: 9899, 
323: 9987, 
324: 9988, 
325: 9989, 
326: 9998, 
327: 9999, 
328: 10000, 
329: 10001, 
330: 10010, 
331: 10011, 
332: 10012, 
333: 10100, 
334: 10101, 
335: 10110, 
336: 10111, 
337: 10112, 
338: 10121, 
339: 10122, 
340: 10123, 
341: 11000, 
342: 11001, 
343: 11010, 
344: 11011, 
345: 11012, 
346: 11100, 
347: 11101, 
348: 11110, 
349: 11111, 
350: 11112, 
351: 11121, 
352: 11122, 
353: 11123, 
354: 11210, 
355: 11211, 
356: 11212, 
357: 11221, 
358: 11222, 
359: 11223, 
360: 11232, 
361: 11233, 
362: 11234, 
363: 12100, 
364: 12101, 
365: 12110, 
366: 12111, 
367: 12112, 
368: 12121, 
369: 12122, 
370: 12123, 
371: 12210, 
372: 12211, 
373: 12212, 
374: 12221, 
375: 12222, 
376: 12223, 
377: 12232, 
378: 12233, 
379: 12234, 
380: 12321, 
381: 12322, 
382: 12323, 
383: 12332, 
384: 12333, 
385: 12334, 
386: 12343, 
387: 12344, 
388: 12345, 
389: 21000, 
390: 21001, 
391: 21010, 
392: 21011, 
393: 21012, 
394: 21100, 
395: 21101, 
396: 21110, 
397: 21111, 
398: 21112, 
399: 21121, 
400: 21122, 
401: 21123, 
402: 21210, 
403: 21211, 
404: 21212, 
405: 21221, 
406: 21222, 
407: 21223, 
408: 21232, 
409: 21233, 
410: 21234, 
411: 22100, 
412: 22101, 
413: 22110, 
414: 22111, 
415: 22112, 
416: 22121, 
417: 22122, 
418: 22123, 
419: 22210, 
420: 22211, 
421: 22212, 
422: 22221, 
423: 22222, 
424: 22223, 
425: 22232, 
426: 22233, 
427: 22234, 
428: 22321, 
429: 22322, 
430: 22323, 
431: 22332, 
432: 22333, 
433: 22334, 
434: 22343, 
435: 22344, 
436: 22345, 
437: 23210, 
438: 23211, 
439: 23212, 
440: 23221, 
441: 23222, 
442: 23223, 
443: 23232, 
444: 23233, 
445: 23234, 
446: 23321, 
447: 23322, 
448: 23323, 
449: 23332, 
450: 23333, 
451: 23334, 
452: 23343, 
453: 23344, 
454: 23345, 
455: 23432, 
456: 23433, 
457: 23434, 
458: 23443, 
459: 23444, 
460: 23445, 
461: 23454, 
462: 23455, 
463: 23456, 
464: 32100, 
465: 32101, 
466: 32110, 
467: 32111, 
468: 32112, 
469: 32121, 
470: 32122, 
471: 32123, 
472: 32210, 
473: 32211, 
474: 32212, 
475: 32221, 
476: 32222, 
477: 32223, 
478: 32232, 
479: 32233, 
480: 32234, 
481: 32321, 
482: 32322, 
483: 32323, 
484: 32332, 
485: 32333, 
486: 32334, 
487: 32343, 
488: 32344, 
489: 32345, 
490: 33210, 
491: 33211, 
492: 33212, 
493: 33221, 
494: 33222, 
495: 33223, 
496: 33232, 
497: 33233, 
498: 33234, 
499: 33321, 
500: 33322, 
501: 33323, 
502: 33332, 
503: 33333, 
504: 33334, 
505: 33343, 
506: 33344, 
507: 33345, 
508: 33432, 
509: 33433, 
510: 33434, 
511: 33443, 
512: 33444, 
513: 33445, 
514: 33454, 
515: 33455, 
516: 33456, 
517: 34321, 
518: 34322, 
519: 34323, 
520: 34332, 
521: 34333, 
522: 34334, 
523: 34343, 
524: 34344, 
525: 34345, 
526: 34432, 
527: 34433, 
528: 34434, 
529: 34443, 
530: 34444, 
531: 34445, 
532: 34454, 
533: 34455, 
534: 34456, 
535: 34543, 
536: 34544, 
537: 34545, 
538: 34554, 
539: 34555, 
540: 34556, 
541: 34565, 
542: 34566, 
543: 34567, 
544: 43210, 
545: 43211, 
546: 43212, 
547: 43221, 
548: 43222, 
549: 43223, 
550: 43232, 
551: 43233, 
552: 43234, 
553: 43321, 
554: 43322, 
555: 43323, 
556: 43332, 
557: 43333, 
558: 43334, 
559: 43343, 
560: 43344, 
561: 43345, 
562: 43432, 
563: 43433, 
564: 43434, 
565: 43443, 
566: 43444, 
567: 43445, 
568: 43454, 
569: 43455, 
570: 43456, 
571: 44321, 
572: 44322, 
573: 44323, 
574: 44332, 
575: 44333, 
576: 44334, 
577: 44343, 
578: 44344, 
579: 44345, 
580: 44432, 
581: 44433, 
582: 44434, 
583: 44443, 
584: 44444, 
585: 44445, 
586: 44454, 
587: 44455, 
588: 44456, 
589: 44543, 
590: 44544, 
591: 44545, 
592: 44554, 
593: 44555, 
594: 44556, 
595: 44565, 
596: 44566, 
597: 44567, 
598: 45432, 
599: 45433, 
600: 45434, 
601: 45443, 
602: 45444, 
603: 45445, 
604: 45454, 
605: 45455, 
606: 45456, 
607: 45543, 
608: 45544, 
609: 45545, 
610: 45554, 
611: 45555, 
612: 45556, 
613: 45565, 
614: 45566, 
615: 45567, 
616: 45654, 
617: 45655, 
618: 45656, 
619: 45665, 
620: 45666, 
621: 45667, 
622: 45676, 
623: 45677, 
624: 45678, 
625: 54321, 
626: 54322, 
627: 54323, 
628: 54332, 
629: 54333, 
630: 54334, 
631: 54343, 
632: 54344, 
633: 54345, 
634: 54432, 
635: 54433, 
636: 54434, 
637: 54443, 
638: 54444, 
639: 54445, 
640: 54454, 
641: 54455, 
642: 54456, 
643: 54543, 
644: 54544, 
645: 54545, 
646: 54554, 
647: 54555, 
648: 54556, 
649: 54565, 
650: 54566, 
651: 54567, 
652: 55432, 
653: 55433, 
654: 55434, 
655: 55443, 
656: 55444, 
657: 55445, 
658: 55454, 
659: 55455, 
660: 55456, 
661: 55543, 
662: 55544, 
663: 55545, 
664: 55554, 
665: 55555, 
666: 55556, 
667: 55565, 
668: 55566, 
669: 55567, 
670: 55654, 
671: 55655, 
672: 55656, 
673: 55665, 
674: 55666, 
675: 55667, 
676: 55676, 
677: 55677, 
678: 55678, 
679: 56543, 
680: 56544, 
681: 56545, 
682: 56554, 
683: 56555, 
684: 56556, 
685: 56565, 
686: 56566, 
687: 56567, 
688: 56654, 
689: 56655, 
690: 56656, 
691: 56665, 
692: 56666, 
693: 56667, 
694: 56676, 
695: 56677, 
696: 56678, 
697: 56765, 
698: 56766, 
699: 56767, 
700: 56776, 
701: 56777, 
702: 56778, 
703: 56787, 
704: 56788, 
705: 56789, 
706: 65432, 
707: 65433, 
708: 65434, 
709: 65443, 
710: 65444, 
711: 65445, 
712: 65454, 
713: 65455, 
714: 65456, 
715: 65543, 
716: 65544, 
717: 65545, 
718: 65554, 
719: 65555, 
720: 65556, 
721: 65565, 
722: 65566, 
723: 65567, 
724: 65654, 
725: 65655, 
726: 65656, 
727: 65665, 
728: 65666, 
729: 65667, 
730: 65676, 
731: 65677, 
732: 65678, 
733: 66543, 
734: 66544, 
735: 66545, 
736: 66554, 
737: 66555, 
738: 66556, 
739: 66565, 
740: 66566, 
741: 66567, 
742: 66654, 
743: 66655, 
744: 66656, 
745: 66665, 
746: 66666, 
747: 66667, 
748: 66676, 
749: 66677, 
750: 66678, 
751: 66765, 
752: 66766, 
753: 66767, 
754: 66776, 
755: 66777, 
756: 66778, 
757: 66787, 
758: 66788, 
759: 66789, 
760: 67654, 
761: 67655, 
762: 67656, 
763: 67665, 
764: 67666, 
765: 67667, 
766: 67676, 
767: 67677, 
768: 67678, 
769: 67765, 
770: 67766, 
771: 67767, 
772: 67776, 
773: 67777, 
774: 67778, 
775: 67787, 
776: 67788, 
777: 67789, 
778: 67876, 
779: 67877, 
780: 67878, 
781: 67887, 
782: 67888, 
783: 67889, 
784: 67898, 
785: 67899, 
786: 76543, 
787: 76544, 
788: 76545, 
789: 76554, 
790: 76555, 
791: 76556, 
792: 76565, 
793: 76566, 
794: 76567, 
795: 76654, 
796: 76655, 
797: 76656, 
798: 76665, 
799: 76666, 
800: 76667, 
801: 76676, 
802: 76677, 
803: 76678, 
804: 76765, 
805: 76766, 
806: 76767, 
807: 76776, 
808: 76777, 
809: 76778, 
810: 76787, 
811: 76788, 
812: 76789, 
813: 77654, 
814: 77655, 
815: 77656, 
816: 77665, 
817: 77666, 
818: 77667, 
819: 77676, 
820: 77677, 
821: 77678, 
822: 77765, 
823: 77766, 
824: 77767, 
825: 77776, 
826: 77777, 
827: 77778, 
828: 77787, 
829: 77788, 
830: 77789, 
831: 77876, 
832: 77877, 
833: 77878, 
834: 77887, 
835: 77888, 
836: 77889, 
837: 77898, 
838: 77899, 
839: 78765, 
840: 78766, 
841: 78767, 
842: 78776, 
843: 78777, 
844: 78778, 
845: 78787, 
846: 78788, 
847: 78789, 
848: 78876, 
849: 78877, 
850: 78878, 
851: 78887, 
852: 78888, 
853: 78889, 
854: 78898, 
855: 78899, 
856: 78987, 
857: 78988, 
858: 78989, 
859: 78998, 
860: 78999, 
861: 87654, 
862: 87655, 
863: 87656, 
864: 87665, 
865: 87666, 
866: 87667, 
867: 87676, 
868: 87677, 
869: 87678, 
870: 87765, 
871: 87766, 
872: 87767, 
873: 87776, 
874: 87777, 
875: 87778, 
876: 87787, 
877: 87788, 
878: 87789, 
879: 87876, 
880: 87877, 
881: 87878, 
882: 87887, 
883: 87888, 
884: 87889, 
885: 87898, 
886: 87899, 
887: 88765, 
888: 88766, 
889: 88767, 
890: 88776, 
891: 88777, 
892: 88778, 
893: 88787, 
894: 88788, 
895: 88789, 
896: 88876, 
897: 88877, 
898: 88878, 
899: 88887, 
900: 88888, 
901: 88889, 
902: 88898, 
903: 88899, 
904: 88987, 
905: 88988, 
906: 88989, 
907: 88998, 
908: 88999, 
909: 89876, 
910: 89877, 
911: 89878, 
912: 89887, 
913: 89888, 
914: 89889, 
915: 89898, 
916: 89899, 
917: 89987, 
918: 89988, 
919: 89989, 
920: 89998, 
921: 89999, 
922: 98765, 
923: 98766, 
924: 98767, 
925: 98776, 
926: 98777, 
927: 98778, 
928: 98787, 
929: 98788, 
930: 98789, 
931: 98876, 
932: 98877, 
933: 98878, 
934: 98887, 
935: 98888, 
936: 98889, 
937: 98898, 
938: 98899, 
939: 98987, 
940: 98988, 
941: 98989, 
942: 98998, 
943: 98999, 
944: 99876, 
945: 99877, 
946: 99878, 
947: 99887, 
948: 99888, 
949: 99889, 
950: 99898, 
951: 99899, 
952: 99987, 
953: 99988, 
954: 99989, 
955: 99998, 
956: 99999, 
957: 100000, 
958: 100001, 
959: 100010, 
960: 100011, 
961: 100012, 
962: 100100, 
963: 100101, 
964: 100110, 
965: 100111, 
966: 100112, 
967: 100121, 
968: 100122, 
969: 100123, 
970: 101000, 
971: 101001, 
972: 101010, 
973: 101011, 
974: 101012, 
975: 101100, 
976: 101101, 
977: 101110, 
978: 101111, 
979: 101112, 
980: 101121, 
981: 101122, 
982: 101123, 
983: 101210, 
984: 101211, 
985: 101212, 
986: 101221, 
987: 101222, 
988: 101223, 
989: 101232, 
990: 101233, 
991: 101234, 
992: 110000, 
993: 110001, 
994: 110010, 
995: 110011, 
996: 110012, 
997: 110100, 
998: 110101, 
999: 110110, 
1000: 110111, 
1001: 110112, 
1002: 110121, 
1003: 110122, 
1004: 110123, 
1005: 111000, 
1006: 111001, 
1007: 111010, 
1008: 111011, 
1009: 111012, 
1010: 111100, 
1011: 111101, 
1012: 111110, 
1013: 111111, 
1014: 111112, 
1015: 111121, 
1016: 111122, 
1017: 111123, 
1018: 111210, 
1019: 111211, 
1020: 111212, 
1021: 111221, 
1022: 111222, 
1023: 111223, 
1024: 111232, 
1025: 111233, 
1026: 111234, 
1027: 112100, 
1028: 112101, 
1029: 112110, 
1030: 112111, 
1031: 112112, 
1032: 112121, 
1033: 112122, 
1034: 112123, 
1035: 112210, 
1036: 112211, 
1037: 112212, 
1038: 112221, 
1039: 112222, 
1040: 112223, 
1041: 112232, 
1042: 112233, 
1043: 112234, 
1044: 112321, 
1045: 112322, 
1046: 112323, 
1047: 112332, 
1048: 112333, 
1049: 112334, 
1050: 112343, 
1051: 112344, 
1052: 112345, 
1053: 121000, 
1054: 121001, 
1055: 121010, 
1056: 121011, 
1057: 121012, 
1058: 121100, 
1059: 121101, 
1060: 121110, 
1061: 121111, 
1062: 121112, 
1063: 121121, 
1064: 121122, 
1065: 121123, 
1066: 121210, 
1067: 121211, 
1068: 121212, 
1069: 121221, 
1070: 121222, 
1071: 121223, 
1072: 121232, 
1073: 121233, 
1074: 121234, 
1075: 122100, 
1076: 122101, 
1077: 122110, 
1078: 122111, 
1079: 122112, 
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9247: 12321233, 
9248: 12321234, 
9249: 12322100, 
9250: 12322101, 
9251: 12322110, 
9252: 12322111, 
9253: 12322112, 
9254: 12322121, 
9255: 12322122, 
9256: 12322123, 
9257: 12322210, 
9258: 12322211, 
9259: 12322212, 
9260: 12322221, 
9261: 12322222, 
9262: 12322223, 
9263: 12322232, 
9264: 12322233, 
9265: 12322234, 
9266: 12322321, 
9267: 12322322, 
9268: 12322323, 
9269: 12322332, 
9270: 12322333, 
9271: 12322334, 
9272: 12322343, 
9273: 12322344, 
9274: 12322345, 
9275: 12323210, 
9276: 12323211, 
9277: 12323212, 
9278: 12323221, 
9279: 12323222, 
9280: 12323223, 
9281: 12323232, 
9282: 12323233, 
9283: 12323234, 
9284: 12323321, 
9285: 12323322, 
9286: 12323323, 
9287: 12323332, 
9288: 12323333, 
9289: 12323334, 
9290: 12323343, 
9291: 12323344, 
9292: 12323345, 
9293: 12323432, 
9294: 12323433, 
9295: 12323434, 
9296: 12323443, 
9297: 12323444, 
9298: 12323445, 
9299: 12323454, 
9300: 12323455, 
9301: 12323456, 
9302: 12332100, 
9303: 12332101, 
9304: 12332110, 
9305: 12332111, 
9306: 12332112, 
9307: 12332121, 
9308: 12332122, 
9309: 12332123, 
9310: 12332210, 
9311: 12332211, 
9312: 12332212, 
9313: 12332221, 
9314: 12332222, 
9315: 12332223, 
9316: 12332232, 
9317: 12332233, 
9318: 12332234, 
9319: 12332321, 
9320: 12332322, 
9321: 12332323, 
9322: 12332332, 
9323: 12332333, 
9324: 12332334, 
9325: 12332343, 
9326: 12332344, 
9327: 12332345, 
9328: 12333210, 
9329: 12333211, 
9330: 12333212, 
9331: 12333221, 
9332: 12333222, 
9333: 12333223, 
9334: 12333232, 
9335: 12333233, 
9336: 12333234, 
9337: 12333321, 
9338: 12333322, 
9339: 12333323, 
9340: 12333332, 
9341: 12333333, 
9342: 12333334, 
9343: 12333343, 
9344: 12333344, 
9345: 12333345, 
9346: 12333432, 
9347: 12333433, 
9348: 12333434, 
9349: 12333443, 
9350: 12333444, 
9351: 12333445, 
9352: 12333454, 
9353: 12333455, 
9354: 12333456, 
9355: 12334321, 
9356: 12334322, 
9357: 12334323, 
9358: 12334332, 
9359: 12334333, 
9360: 12334334, 
9361: 12334343, 
9362: 12334344, 
9363: 12334345, 
9364: 12334432, 
9365: 12334433, 
9366: 12334434, 
9367: 12334443, 
9368: 12334444, 
9369: 12334445, 
9370: 12334454, 
9371: 12334455, 
9372: 12334456, 
9373: 12334543, 
9374: 12334544, 
9375: 12334545, 
9376: 12334554, 
9377: 12334555, 
9378: 12334556, 
9379: 12334565, 
9380: 12334566, 
9381: 12334567, 
9382: 12343210, 
9383: 12343211, 
9384: 12343212, 
9385: 12343221, 
9386: 12343222, 
9387: 12343223, 
9388: 12343232, 
9389: 12343233, 
9390: 12343234, 
9391: 12343321, 
9392: 12343322, 
9393: 12343323, 
9394: 12343332, 
9395: 12343333, 
9396: 12343334, 
9397: 12343343, 
9398: 12343344, 
9399: 12343345, 
9400: 12343432, 
9401: 12343433, 
9402: 12343434, 
9403: 12343443, 
9404: 12343444, 
9405: 12343445, 
9406: 12343454, 
9407: 12343455, 
9408: 12343456, 
9409: 12344321, 
9410: 12344322, 
9411: 12344323, 
9412: 12344332, 
9413: 12344333, 
9414: 12344334, 
9415: 12344343, 
9416: 12344344, 
9417: 12344345, 
9418: 12344432, 
9419: 12344433, 
9420: 12344434, 
9421: 12344443, 
9422: 12344444, 
9423: 12344445, 
9424: 12344454, 
9425: 12344455, 
9426: 12344456, 
9427: 12344543, 
9428: 12344544, 
9429: 12344545, 
9430: 12344554, 
9431: 12344555, 
9432: 12344556, 
9433: 12344565, 
9434: 12344566, 
9435: 12344567, 
9436: 12345432, 
9437: 12345433, 
9438: 12345434, 
9439: 12345443, 
9440: 12345444, 
9441: 12345445, 
9442: 12345454, 
9443: 12345455, 
9444: 12345456, 
9445: 12345543, 
9446: 12345544, 
9447: 12345545, 
9448: 12345554, 
9449: 12345555, 
9450: 12345556, 
9451: 12345565, 
9452: 12345566, 
9453: 12345567, 
9454: 12345654, 
9455: 12345655, 
9456: 12345656, 
9457: 12345665, 
9458: 12345666, 
9459: 12345667, 
9460: 12345676, 
9461: 12345677, 
9462: 12345678, 
9463: 21000000, 
9464: 21000001, 
9465: 21000010, 
9466: 21000011, 
9467: 21000012, 
9468: 21000100, 
9469: 21000101, 
9470: 21000110, 
9471: 21000111, 
9472: 21000112, 
9473: 21000121, 
9474: 21000122, 
9475: 21000123, 
9476: 21001000, 
9477: 21001001, 
9478: 21001010, 
9479: 21001011, 
9480: 21001012, 
9481: 21001100, 
9482: 21001101, 
9483: 21001110, 
9484: 21001111, 
9485: 21001112, 
9486: 21001121, 
9487: 21001122, 
9488: 21001123, 
9489: 21001210, 
9490: 21001211, 
9491: 21001212, 
9492: 21001221, 
9493: 21001222, 
9494: 21001223, 
9495: 21001232, 
9496: 21001233, 
9497: 21001234, 
9498: 21010000, 
9499: 21010001, 
9500: 21010010, 
9501: 21010011, 
9502: 21010012, 
9503: 21010100, 
9504: 21010101, 
9505: 21010110, 
9506: 21010111, 
9507: 21010112, 
9508: 21010121, 
9509: 21010122, 
9510: 21010123, 
9511: 21011000, 
9512: 21011001, 
9513: 21011010, 
9514: 21011011, 
9515: 21011012, 
9516: 21011100, 
9517: 21011101, 
9518: 21011110, 
9519: 21011111, 
9520: 21011112, 
9521: 21011121, 
9522: 21011122, 
9523: 21011123, 
9524: 21011210, 
9525: 21011211, 
9526: 21011212, 
9527: 21011221, 
9528: 21011222, 
9529: 21011223, 
9530: 21011232, 
9531: 21011233, 
9532: 21011234, 
9533: 21012100, 
9534: 21012101, 
9535: 21012110, 
9536: 21012111, 
9537: 21012112, 
9538: 21012121, 
9539: 21012122, 
9540: 21012123, 
9541: 21012210, 
9542: 21012211, 
9543: 21012212, 
9544: 21012221, 
9545: 21012222, 
9546: 21012223, 
9547: 21012232, 
9548: 21012233, 
9549: 21012234, 
9550: 21012321, 
9551: 21012322, 
9552: 21012323, 
9553: 21012332, 
9554: 21012333, 
9555: 21012334, 
9556: 21012343, 
9557: 21012344, 
9558: 21012345, 
9559: 21100000, 
9560: 21100001, 
9561: 21100010, 
9562: 21100011, 
9563: 21100012, 
9564: 21100100, 
9565: 21100101, 
9566: 21100110, 
9567: 21100111, 
9568: 21100112, 
9569: 21100121, 
9570: 21100122, 
9571: 21100123, 
9572: 21101000, 
9573: 21101001, 
9574: 21101010, 
9575: 21101011, 
9576: 21101012, 
9577: 21101100, 
9578: 21101101, 
9579: 21101110, 
9580: 21101111, 
9581: 21101112, 
9582: 21101121, 
9583: 21101122, 
9584: 21101123, 
9585: 21101210, 
9586: 21101211, 
9587: 21101212, 
9588: 21101221, 
9589: 21101222, 
9590: 21101223, 
9591: 21101232, 
9592: 21101233, 
9593: 21101234, 
9594: 21110000, 
9595: 21110001, 
9596: 21110010, 
9597: 21110011, 
9598: 21110012, 
9599: 21110100, 
9600: 21110101, 
9601: 21110110, 
9602: 21110111, 
9603: 21110112, 
9604: 21110121, 
9605: 21110122, 
9606: 21110123, 
9607: 21111000, 
9608: 21111001, 
9609: 21111010, 
9610: 21111011, 
9611: 21111012, 
9612: 21111100, 
9613: 21111101, 
9614: 21111110, 
9615: 21111111, 
9616: 21111112, 
9617: 21111121, 
9618: 21111122, 
9619: 21111123, 
9620: 21111210, 
9621: 21111211, 
9622: 21111212, 
9623: 21111221, 
9624: 21111222, 
9625: 21111223, 
9626: 21111232, 
9627: 21111233, 
9628: 21111234, 
9629: 21112100, 
9630: 21112101, 
9631: 21112110, 
9632: 21112111, 
9633: 21112112, 
9634: 21112121, 
9635: 21112122, 
9636: 21112123, 
9637: 21112210, 
9638: 21112211, 
9639: 21112212, 
9640: 21112221, 
9641: 21112222, 
9642: 21112223, 
9643: 21112232, 
9644: 21112233, 
9645: 21112234, 
9646: 21112321, 
9647: 21112322, 
9648: 21112323, 
9649: 21112332, 
9650: 21112333, 
9651: 21112334, 
9652: 21112343, 
9653: 21112344, 
9654: 21112345, 
9655: 21121000, 
9656: 21121001, 
9657: 21121010, 
9658: 21121011, 
9659: 21121012, 
9660: 21121100, 
9661: 21121101, 
9662: 21121110, 
9663: 21121111, 
9664: 21121112, 
9665: 21121121, 
9666: 21121122, 
9667: 21121123, 
9668: 21121210, 
9669: 21121211, 
9670: 21121212, 
9671: 21121221, 
9672: 21121222, 
9673: 21121223, 
9674: 21121232, 
9675: 21121233, 
9676: 21121234, 
9677: 21122100, 
9678: 21122101, 
9679: 21122110, 
9680: 21122111, 
9681: 21122112, 
9682: 21122121, 
9683: 21122122, 
9684: 21122123, 
9685: 21122210, 
9686: 21122211, 
9687: 21122212, 
9688: 21122221, 
9689: 21122222, 
9690: 21122223, 
9691: 21122232, 
9692: 21122233, 
9693: 21122234, 
9694: 21122321, 
9695: 21122322, 
9696: 21122323, 
9697: 21122332, 
9698: 21122333, 
9699: 21122334, 
9700: 21122343, 
9701: 21122344, 
9702: 21122345, 
9703: 21123210, 
9704: 21123211, 
9705: 21123212, 
9706: 21123221, 
9707: 21123222, 
9708: 21123223, 
9709: 21123232, 
9710: 21123233, 
9711: 21123234, 
9712: 21123321, 
9713: 21123322, 
9714: 21123323, 
9715: 21123332, 
9716: 21123333, 
9717: 21123334, 
9718: 21123343, 
9719: 21123344, 
9720: 21123345, 
9721: 21123432, 
9722: 21123433, 
9723: 21123434, 
9724: 21123443, 
9725: 21123444, 
9726: 21123445, 
9727: 21123454, 
9728: 21123455, 
9729: 21123456, 
9730: 21210000, 
9731: 21210001, 
9732: 21210010, 
9733: 21210011, 
9734: 21210012, 
9735: 21210100, 
9736: 21210101, 
9737: 21210110, 
9738: 21210111, 
9739: 21210112, 
9740: 21210121, 
9741: 21210122, 
9742: 21210123, 
9743: 21211000, 
9744: 21211001, 
9745: 21211010, 
9746: 21211011, 
9747: 21211012, 
9748: 21211100, 
9749: 21211101, 
9750: 21211110, 
9751: 21211111, 
9752: 21211112, 
9753: 21211121, 
9754: 21211122, 
9755: 21211123, 
9756: 21211210, 
9757: 21211211, 
9758: 21211212, 
9759: 21211221, 
9760: 21211222, 
9761: 21211223, 
9762: 21211232, 
9763: 21211233, 
9764: 21211234, 
9765: 21212100, 
9766: 21212101, 
9767: 21212110, 
9768: 21212111, 
9769: 21212112, 
9770: 21212121, 
9771: 21212122, 
9772: 21212123, 
9773: 21212210, 
9774: 21212211, 
9775: 21212212, 
9776: 21212221, 
9777: 21212222, 
9778: 21212223, 
9779: 21212232, 
9780: 21212233, 
9781: 21212234, 
9782: 21212321, 
9783: 21212322, 
9784: 21212323, 
9785: 21212332, 
9786: 21212333, 
9787: 21212334, 
9788: 21212343, 
9789: 21212344, 
9790: 21212345, 
9791: 21221000, 
9792: 21221001, 
9793: 21221010, 
9794: 21221011, 
9795: 21221012, 
9796: 21221100, 
9797: 21221101, 
9798: 21221110, 
9799: 21221111, 
9800: 21221112, 
9801: 21221121, 
9802: 21221122, 
9803: 21221123, 
9804: 21221210, 
9805: 21221211, 
9806: 21221212, 
9807: 21221221, 
9808: 21221222, 
9809: 21221223, 
9810: 21221232, 
9811: 21221233, 
9812: 21221234, 
9813: 21222100, 
9814: 21222101, 
9815: 21222110, 
9816: 21222111, 
9817: 21222112, 
9818: 21222121, 
9819: 21222122, 
9820: 21222123, 
9821: 21222210, 
9822: 21222211, 
9823: 21222212, 
9824: 21222221, 
9825: 21222222, 
9826: 21222223, 
9827: 21222232, 
9828: 21222233, 
9829: 21222234, 
9830: 21222321, 
9831: 21222322, 
9832: 21222323, 
9833: 21222332, 
9834: 21222333, 
9835: 21222334, 
9836: 21222343, 
9837: 21222344, 
9838: 21222345, 
9839: 21223210, 
9840: 21223211, 
9841: 21223212, 
9842: 21223221, 
9843: 21223222, 
9844: 21223223, 
9845: 21223232, 
9846: 21223233, 
9847: 21223234, 
9848: 21223321, 
9849: 21223322, 
9850: 21223323, 
9851: 21223332, 
9852: 21223333, 
9853: 21223334, 
9854: 21223343, 
9855: 21223344, 
9856: 21223345, 
9857: 21223432, 
9858: 21223433, 
9859: 21223434, 
9860: 21223443, 
9861: 21223444, 
9862: 21223445, 
9863: 21223454, 
9864: 21223455, 
9865: 21223456, 
9866: 21232100, 
9867: 21232101, 
9868: 21232110, 
9869: 21232111, 
9870: 21232112, 
9871: 21232121, 
9872: 21232122, 
9873: 21232123, 
9874: 21232210, 
9875: 21232211, 
9876: 21232212, 
9877: 21232221, 
9878: 21232222, 
9879: 21232223, 
9880: 21232232, 
9881: 21232233, 
9882: 21232234, 
9883: 21232321, 
9884: 21232322, 
9885: 21232323, 
9886: 21232332, 
9887: 21232333, 
9888: 21232334, 
9889: 21232343, 
9890: 21232344, 
9891: 21232345, 
9892: 21233210, 
9893: 21233211, 
9894: 21233212, 
9895: 21233221, 
9896: 21233222, 
9897: 21233223, 
9898: 21233232, 
9899: 21233233, 
9900: 21233234, 
9901: 21233321, 
9902: 21233322, 
9903: 21233323, 
9904: 21233332, 
9905: 21233333, 
9906: 21233334, 
9907: 21233343, 
9908: 21233344, 
9909: 21233345, 
9910: 21233432, 
9911: 21233433, 
9912: 21233434, 
9913: 21233443, 
9914: 21233444, 
9915: 21233445, 
9916: 21233454, 
9917: 21233455, 
9918: 21233456, 
9919: 21234321, 
9920: 21234322, 
9921: 21234323, 
9922: 21234332, 
9923: 21234333, 
9924: 21234334, 
9925: 21234343, 
9926: 21234344, 
9927: 21234345, 
9928: 21234432, 
9929: 21234433, 
9930: 21234434, 
9931: 21234443, 
9932: 21234444, 
9933: 21234445, 
9934: 21234454, 
9935: 21234455, 
9936: 21234456, 
9937: 21234543, 
9938: 21234544, 
9939: 21234545, 
9940: 21234554, 
9941: 21234555, 
9942: 21234556, 
9943: 21234565, 
9944: 21234566, 
9945: 21234567, 
9946: 22100000, 
9947: 22100001, 
9948: 22100010, 
9949: 22100011, 
9950: 22100012, 
9951: 22100100, 
9952: 22100101, 
9953: 22100110, 
9954: 22100111, 
9955: 22100112, 
9956: 22100121, 
9957: 22100122, 
9958: 22100123, 
9959: 22101000, 
9960: 22101001, 
9961: 22101010, 
9962: 22101011, 
9963: 22101012, 
9964: 22101100, 
9965: 22101101, 
9966: 22101110, 
9967: 22101111, 
9968: 22101112, 
9969: 22101121, 
9970: 22101122, 
9971: 22101123, 
9972: 22101210, 
9973: 22101211, 
9974: 22101212, 
9975: 22101221, 
9976: 22101222, 
9977: 22101223, 
9978: 22101232, 
9979: 22101233, 
9980: 22101234, 
9981: 22110000, 
9982: 22110001, 
9983: 22110010, 
9984: 22110011, 
9985: 22110012, 
9986: 22110100, 
9987: 22110101, 
9988: 22110110, 
9989: 22110111, 
9990: 22110112, 
9991: 22110121, 
9992: 22110122, 
9993: 22110123, 
9994: 22111000, 
9995: 22111001, 
9996: 22111010, 
9997: 22111011, 
9998: 22111012, 
9999: 22111100, 
10000: 22111101}

K = int(input())
print(lunlun[K])