### BITTIJONO (dt2k18) ###
# ok i know that's not a good answer. But it wurkz. And probably gives a few points
# lol main again :D
def main(n):
# just a random (mod'd, n-2) Fibonacci series to ease computation ;)
fib = [1, 3, 6, 11, 19, 32, 53, 87, 142, 231, 375, 608, 985, 1595, 2582, 4179, 6763, 10944,
17709, 28655, 46366, 75023, 121391, 196416, 317809, 514227, 832038, 1346267]
# just a random series :D
# i honestly apologize for this.
a = [0, 3, 2, 15, 4, 5, 8, 12, 13, 9, 10, 29, 27, 17, 25, 20, 18, 33, 21, 57, 40, 51, 34, 36, 44, 80, 38, 45, 41, 104, 72, 42, 88, 92, 100, 225, 70, 107, 76, 132, 105, 101, 73, 89, 84, 189, 82, 74, 161, 237, 142, 380, 85, 156, 209, 204, 145, 168, 185, 177, 217, 162, 205, 138, 164, 180, 148, 153, 146, 443, 178, 150, 154, 213, 273, 353, 181, 165, 169, 266, 369, 401, 328, 413, 324, 296, 170, 624, 276, 290, 274, 305, 313, 540, 292, 278, 409, 314, 282, 792, 373, 308, 300, 332, 337, 437, 294, 648, 306, 365, 532, 744, 405, 329, 361, 609, 297, 546, 345, 534, 340, 696, 580, 561, 538, 338, 330, 558, 298, 708, 616, 732, 793, 570, 664, 804, 556, 564, 604, 861, 550, 341, 668, 837, 566, 849, 562, 1274, 626, 612, 745, 588, 620, 1400, 593, 741, 709, 873, 697, 1070, 689, 1265, 805, 813, 674, 585, 614, 852, 821, 729, 554, 1268, 676, 717, 724, 660, 617, 1112, 596, 1304, 658, 1208, 722, 684, 586, 594, 1140, 1688, 602, 690, 598, 666, 1185, 618, 1122, 1757, 853, 1220, 1240, 1100, 1164, 1124, 1138, 1244, 725, 693, 677, 1673, 1180, 681, 1420, 1436, 1066, 2928, 1161, 1733, 1393, 1169, 1677, 1352, 1497, 2136, 1713, 1448, 1126, 3108, 1222, 1481, 1192, 1457, 682, 1589, 1396, 1715, 1233, 1298, 1108, 1421, 1201, 1442, 1162, 2232, 1098, 1337, 1684, 1106, 1372, 1316, 1210, 2316, 1114, 1460, 1110, 1394, 1188, 1172, 1306, 3171, 1258, 2328, 1225, 1130, 1170, 1388, 1452, 1433, 1332, 1493, 1236, 1397, 1426, 1196, 1707, 2640, 1174, 2268, 2284, 1361, 1242, 1178, 1234, 1202, 2150, 1709, 1330, 1190, 1701, 1685, 2626, 1226, 1705, 2844, 1461, 2736, 1453, 3153, 1317, 3180, 1621, 1445, 1353, 2829, 1449, 3789, 1321, 1385, 2456, 3513, 1429, 1193, 1381, 2502, 2138, 3432, 1369, 2754, 2257, 2802, 2252, 1364, 2210, 2508, 2417, 2376, 3149, 3240, 2344, 3483, 2617, 2154, 2234, 2673, 1362, 2805, 1354, 1322, 2212, 3219, 3161, 2322, 1194, 2664, 2449, 2472, 2194, 2721, 2420, 4316, 2228, 2964, 2353, 2850, 2282, 2481, 2908, 2505, 2612, 2676, 2326, 2220, 2198, 2652, 2260, 2490, 2230, 2700, 3749, 2202, 2522, 3273, 2330, 2916, 3445, 2226, 1365, 2514, 2266, 2214, 2258, 2610, 2374, 5264, 4294, 5873, 2468, 2262, 2404, 2484, 2356, 2250, 2348, 2412, 2981, 3435, 2506, 2868, 4998, 2892, 2668, 2601, 2452, 2793, 2641, 3501, 2342, 2457, 2476, 2358, 2728, 2385, 2764, 7241, 2450, 3411, 2354, 2757, 2482, 5960, 4260, 2745, 6253, 5552, 2866, 3369, 2737, 6233, 4242, 3405, 3221, 2406, 2470, 3381, 5698, 3237, 2458, 2889, 4420, 4556, 2698, 6041, 2602, 7016, 2377, 2853, 4840, 3285, 2893, 4268, 4986, 5729, 2218, 7475, 2761, 2409, 2857, 2724, 4308, 4796, 5032, 2649, 2665, 4634, 2708, 2772, 2473, 2661, 2740, 4802, 4374, 4262, 2713, 2388, 4977, 4850, 4314, 2706, 4306, 4529, 4398, 2634, 7065, 4874, 2642, 4721, 2732, 4310, 5848, 2346, 4564, 4298, 2386, 4538, 2378, 5924, 5161, 2394, 2410, 4712, 5793, 5066, 2738, 4466, 2390, 10992, 2666, 5537, 4696, 10689, 4824, 4430, 2474, 4562, 4396, 9480, 4660, 12372, 5653, 4490, 3413, 4460, 4828, 4724, 9256, 4532, 5497, 4700, 6547, 4952, 5356, 12393, 4390, 5528, 4884, 5228, 4428, 4406, 4554, 4748, 4500, 2901, 4662, 4433, 2773, 2709, 2725, 4913, 4534, 4658, 4524, 4706, 5017, 5042, 2729, 5909, 4498, 10044, 5257, 5516, 6421, 5573, 4266, 8358, 4530, 5993, 4900, 6824, 4722, 6548, 4708, 4454, 5961, 4964, 4684, 4838, 5682, 4745, 4972, 4502, 5448, 4922, 4518, 12201, 6481, 8484, 4506, 5861, 5593, 5669, 5800, 5018, 4890, 5444, 5544, 5288, 5521, 5561, 6859, 4841, 5773, 5513, 5713, 4817, 4776, 4916, 5209, 5396, 5673, 2730, 4812, 4940, 4908, 6989, 5749, 5492, 4945, 5225, 5353, 6509, 5394, 5033, 5317, 13425, 6873, 4436, 4681, 6857, 4785, 8838, 5464, 5282, 6441, 6965, 4710, 8526, 4650, 9105, 5586, 6581, 6745, 4394, 4770, 8622, 9254, 5705, 4746, 5210, 6477, 8556, 4434, 5468, 4426, 6809, 4842, 8808, 6501, 4442, 5796, 6569, 4458, 8628, 5284, 10440, 5268, 5540, 4438, 5474, 5556, 4937, 4969, 5780, 4809, 4772, 8756, 5354, 4692, 5273, 8596, 5321, 8650, 8940, 4756, 5300, 5737, 8742, 5721, 8820, 5476, 4820, 4522, 8796, 5733, 8856, 4905, 9753, 4953, 4682, 8594, 5804, 5332, 4754, 4690, 10896, 5529, 8814, 5292, 5420, 4948, 9078, 8626, 8550, 5589, 4826, 4698, 10476, 4780, 5522, 5554, 6827, 4818, 4694, 9098, 8802, 5452, 9528, 5274, 8598, 9377, 10098, 9142, 5330, 4758, 4970, 8860, 9009, 4714, 4946, 11041, 9132, 4786, 9606, 4954, 9108, 4762, 11874, 4810, 10041, 6829, 5426, 9058, 6869, 6837, 9138, 4774, 6821, 9356, 9330, 6741, 10818, 8996, 9297, 10657, 8934, 4906, 11460, 6825, 8910, 8849, 10506, 11617, 8982, 5845, 9060, 9436, 11586, 5557, 8532, 5805, 9444, 5413, 5813, 11500, 9258, 9038, 9126, 5797, 6485, 5781, 9624, 9569, 5285, 5449, 8490, 5541, 9681, 9110, 5801, 8872, 8913, 10786, 5417, 5545, 9114, 5289, 10725, 5481, 9594, 8530, 11145, 8522, 10425, 10010, 5717, 9676, 11817, 4777, 5525, 13453, 5477, 9361, 9780, 8554, 9036, 13753, 13905, 10402, 9612, 8534, 5465, 8746, 13173, 8806, 10473, 10636, 11592, 9884, 9318, 10609, 12585, 9766, 9798, 5460, 11688, 10730, 9585, 10346, 10536, 8866, 13521, 10936, 13971, 8842, 11337, 8998, 11112, 9826, 13125, 9062, 9414, 11624, 12957, 8890, 9384, 10388, 11076, 9926, 10404, 8618, 13221, 9512, 11124, 9865, 9540, 9778, 16790, 5458, 9873, 9842, 9300, 8878, 5450, 5418, 9576, 5290, 9828, 8788, 10386, 9937, 8868, 9425, 9492, 11929, 10521, 10057, 16994, 10633, 4778, 10420, 9804, 8852, 9393, 9836, 10713, 9649, 9354, 10988, 9588, 9506, 10545, 9490, 11865, 8884, 8778, 11468, 9378, 9809, 11877, 11180, 10980, 8786, 19988, 9769, 18017, 10972, 8850, 10073, 11028, 9130, 9690, 11042, 9306, 9521, 13977, 10708, 10452, 8794, 13929, 9302, 9402, 10868, 19844, 9634, 10068, 10025, 8790, 8876, 11700, 9682, 18824, 10844, 13017, 12889, 8886, 8914, 11106, 10658, 11154, 9508, 9564, 9380, 11346, 9364, 14997, 13157, 13101, 8810, 17174, 10090, 12948, 8918, 10458, 9914, 17252, 9322, 22604, 9866, 16730, 8882, 21296, 10610, 9801, 8858, 9450, 9830, 9636, 5461, 9417, 8906, 9066, 9652, 9396, 9929, 9042, 9530, 17825, 8870, 21890, 9674, 11628, 9050, 11673, 9034, 10596, 9542, 19334, 11465, 10548, 9892, 11481, 11417, 18872, 10540, 18326, 9572, 10821, 9046, 12972, 9428, 17450, 11666, 10866, 11564, 13995, 9388, 11469, 9002, 9876, 21457, 22241, 9620, 11589, 9524, 9366, 22338, 11541, 9398, 19508, 10897, 9516, 9644, 10644, 9833, 13611, 9881, 17816, 11060, 10860, 9946, 10572, 11177, 11436, 9370, 11601, 10409, 14037, 9434, 10668, 10985, 11052, 9938, 9618, 9394, 9426, 9650, 18008, 9548, 13677, 10961, 17978, 17206, 9900, 10642, 19076, 10546, 10920, 9382, 9510, 9553, 13605, 11861, 10956, 9430, 10674, 18822, 11349, 18036, 20633, 13651, 11157, 11029, 13485, 9802, 17510, 10949, 13641, 9418, 9810, 13477, 21032, 11701, 9522, 9638, 18506, 9622, 9906, 19209, 13737, 11693, 20876, 18252, 22376, 24921, 18698, 9818, 10533, 9626, 10929, 17044, 9882, 23848, 19412, 18514, 20804, 13645, 18038, 9574, 11685, 11557, 9894, 10825, 17576, 12973, 18785, 17076, 21026, 13525, 17108, 11689, 11565, 11593, 9834, 12965, 10914, 13013, 18278, 10537, 10569, 17704, 17042, 11113, 20933, 11081, 10890, 24981, 10794, 17974, 11625, 11561, 10410, 18840, 19217, 11669, 25292, 11413, 19652, 9545, 17768, 17809, 16982, 11597, 11109, 11045, 20177, 17322, 17684, 10601, 9513, 11429, 22034, 11573, 11445, 18886, 28109, 18636, 8874, 10969, 19532, 9641, 18020, 17490, 10953, 11609, 21416, 10661, 23234, 17002, 11097, 10916, 17570, 17046, 11049, 19132, 20330, 10585, 19313, 10841, 10665, 17110, 10857, 22993, 11604, 11477, 25928, 18124, 17498, 10900, 11061, 11092, 10836, 10964, 9897, 10580, 21956, 17494, 21458, 17752, 10932, 21049, 33588, 17098, 17594, 19612, 17882, 19012, 21176, 18993, 10905, 17062, 27992, 9556, 20828, 18580, 18980, 18756, 17258, 20049, 18596, 17826, 17234, 10898, 22856, 19128, 27251, 19078, 23240, 22761, 26825, 10826, 20948, 11602, 23285, 10538, 23336, 17700, 21620, 10834, 17756, 11090, 21320, 26968, 10578, 17514, 35298, 10924, 10962, 10570, 20834, 17238, 18722, 17710, 11082, 9386, 18260, 10586, 19601, 25797, 10602, 17194, 26309, 9554, 17642, 18612, 19529, 17554, 18833, 9514, 9546, 22441, 17588, 9578, 26405, 9562, 21704, 20649, 9642, 17778, 17690, 19780, 23201, 18106, 21080, 17722, 21218, 18058, 19913, 10930, 18737, 18282, 25241, 19048, 9558, 10954, 21188, 10858, 30059, 10666, 18776, 21288, 19889, 21921, 19160, 18604, 21428, 18582, 20900, 17620, 23852, 18865, 20180, 17764, 25913, 9898, 18266, 21220, 18710, 19032, 18644, 18889, 21212, 18724, 18614, 18250, 17558, 19930, 19172, 17772, 22613, 17590, 25397, 18586, 22421, 17716, 13653, 17812, 21644, 18262, 22985, 18132, 17846, 20148, 17708, 18780, 23132, 18996, 19730, 18874, 22745, 17562, 21386, 19665, 34356, 19060, 18068, 18610, 23180, 17626, 19874, 18100, 30035, 18714, 19292, 17586, 22925, 20121, 17618, 19036, 35736, 18598, 18650, 18982, 36378, 19218, 22700, 19540, 17810, 18642, 18746, 17740, 33498, 17574, 18218, 20073, 21266, 18138, 19298, 19084, 33462, 11605, 20057, 17622, 17702, 18066, 37002, 17745, 21770, 11093, 10965, 10901, 21305, 18130, 10917, 18646, 23138, 19804, 21362, 20052, 27557, 17610, 21029, 19530, 26789, 45508, 18092, 23917, 30053, 18634, 37041, 20914, 34662, 18102, 34152, 10921, 17714, 18852, 18788, 18826, 19538, 19042, 18740, 17830, 36129, 17814, 27473, 19642, 21284, 17994, 25685, 19810, 19850, 19308, 21092, 19270, 17066, 18796, 29333, 19222, 25949, 17818, 23465, 21649, 21068, 23140, 23177, 18070, 18122, 19258, 20042, 17766, 18098, 21129, 20777, 20050, 23372, 19770, 18890, 18010, 21356, 19174, 33882, 19620, 19058, 20809, 21137, 19782, 27413, 23340, 18074, 19044, 27365, 22161, 22892, 18006, 18836, 19812, 22805, 19081, 22130, 18726, 19226, 19860, 18086, 19020, 22373, 22225, 38625, 25269, 22085, 19089, 25253, 18742, 19142, 19657, 18026, 35752, 42849, 19609, 18860, 18985, 19052, 18769, 35958, 22932, 21977, 27313, 22220, 19636, 39384, 19252, 19562, 22053, 21800, 19764, 19025, 21828, 22184, 18738, 26453, 18834, 22124, 19369, 22937, 22860, 21905, 19756, 22361, 19858, 19244, 23733, 21317, 19281, 23237, 23157, 37512, 19153, 18866, 21196, 36450, 19668, 20825, 23892, 22709, 21324, 19112, 21292, 22097, 36238, 23225, 22930, 39201, 21780, 26921, 22201, 19148, 21189, 21329, 10922, 21413, 21972, 19628, 21937, 21713, 20820, 27821, 21177, 23765, 23217, 27245, 25749, 38820, 21417, 21689, 20905, 19793, 21708, 21065, 18790, 21737, 19302, 21794, 27315, 37620, 18838, 34074, 21681, 21605, 20137, 18854, 25893, 19238, 23401, 27053, 25765, 41316, 21642, 21578, 19674, 47673, 17748, 25781, 21034, 18842, 20778, 37410, 23202, 19121, 19866, 19610, 19666, 50025, 21666, 21848, 22741, 19250, 34004, 22178, 19762, 19634, 21154, 25769, 19017, 21809, 35176, 18761, 21733, 38370, 20818, 18602, 21130, 26021, 41380, 20810, 21298, 33942, 21970, 27341, 23373, 19046, 23341, 35688, 17578, 19622, 21817, 19106, 20826, 26285, 26025, 25961, 34478, 38724, 21226, 38466, 20842, 38280, 25813, 18986, 26964, 19082, 22089, 34650, 25933, 19658, 23257, 19178, 17746, 26261, 19273, 19130, 21796, 37833, 17706, 35700, 35188, 17738, 25957, 37257, 26005, 37698, 17770, 38001, 17754, 35748, 33970, 23204, 41266, 35985, 21081, 34002, 23380, 17834, 23349, 21209, 21321, 37425, 21097, 21353, 21193, 37800, 21156, 34452, 22228, 48300, 35432, 23129, 21076, 17750, 19785, 36264, 19881, 22889, 23188, 23252, 21285, 38076, 22861, 19145, 21874, 37992, 34006, 35028, 39521, 21140, 21898, 21962, 19108, 23141, 21349, 22949, 21418, 41700, 21657, 20906, 18772, 19817, 34102, 37809, 21705, 19241, 40009, 38328, 21204, 38802, 21172, 21650, 21721, 35766, 21684, 20138, 34450, 37146, 19092, 19028, 21145, 35118, 40537, 42900, 21289, 22169, 19156, 23186, 34514, 22121, 21337, 21860, 19284, 34098, 22105, 19124, 18090, 40134, 21138, 21074, 35380, 37818, 37489, 34476, 37642, 38994, 22162, 22226, 34198, 19625, 22117, 36564, 21868, 21908, 19801, 22100, 18730, 34518, 23122, 21716, 23212, 21332, 43234, 40626, 35026, 37218, 37282, 21812, 19090, 21932, 21082, 18770, 38690, 37704, 21676, 38754, 19018, 21164, 18762, 36114, 21804, 44850, 36049, 19796, 35602, 38004, 37190, 39492, 19026, 46125, 18778, 52584, 19306, 37794, 22357, 18794, 21973, 34506, 21781, 36258, 39121, 34482, 35246, 35142, 19116, 46569, 19282, 19154, 21906, 41628, 35924, 21938, 27307, 35730, 37172, 40140, 18774, 41820, 19290, 19034, 22866, 37164, 36394, 34458, 37220, 19274, 21354, 21098, 22194, 38130, 38200, 35382, 41785, 37602, 35978, 35172, 21330, 40284, 19030, 21170, 21714, 34470, 21682, 38088, 41321, 35406, 21841, 36498, 19882, 19094, 37228, 37284, 35252, 34410, 21322, 21194, 18858, 38049, 19794, 38628, 35180, 37986, 41906, 40074, 35630, 42732, 19122, 27989, 19818, 37812, 19786, 36132, 39236, 40098, 19050, 19802, 19146, 47709, 35654, 19754, 19098, 35922, 35606, 46929, 19242, 37596, 35734, 37158, 27309, 42210, 21810, 35274, 43540, 42852, 35662, 38040, 27477, 44193, 37468, 27317, 21706, 43092, 27285, 27221, 19110, 21290, 27301, 58029, 35558, 35442, 36554, 39768, 38084, 35220, 26965, 39060, 35110, 39852, 35428, 39660, 35930, 35148, 40250, 45333, 37268, 42204, 35534, 39186, 36530, 40218, 19626, 37446, 35126, 38028, 45788, 27305, 35254, 44748, 39313, 35610, 36154, 39828, 36004, 39336, 39482, 35244, 35473, 36426, 37666, 46308, 39305, 23381, 37430, 43497, 36166, 37302, 37969, 44385, 38488, 35436, 36506, 90704, 37292, 22229, 34132, 41754, 35122, 21653, 36074, 40026, 43361, 21797, 35218, 41640, 36518, 38682, 23253, 35409, 23221, 67730, 37034, 37650, 42449, 23189, 36442, 39468, 22197, 44268, 37474, 41298, 25941, 36204, 23125, 39729, 38516, 35250, 21669, 38241, 38353, 22181, 39113, 39345, 39476, 21833, 21157, 35946, 33962, 36438, 35665, 44298, 21925, 39369, 41306, 43617, 37298, 37746, 23209, 39705, 36148, 35496, 45269, 42474, 37730, 38700, 54349, 38154, 21801, 44085, 22185, 39516, 21673, 21929, 38492, 35532, 36140, 21161, 40082, 41772, 36274, 42540, 21865, 44625, 51749, 39204, 45881, 51549, 34130, 80609, 36052, 38826, 43913, 46197, 34090, 41514, 40268, 39084, 35222, 34122, 22869, 37476, 43889, 50325, 38630, 35238, 34154, 51525, 19113, 51381, 22101, 54429, 21909, 38025, 35686, 37452, 21861, 36012, 35638, 42396, 36172, 51573, 37286, 34218, 37961, 39330, 37606, 35622, 37732, 46449, 37513, 54981, 37654, 93218, 42652, 50541, 37274, 39750, 55085, 34134, 36022, 47949, 21849, 36177, 38033, 34986, 37484, 37740, 37798, 37521, 39194, 38694, 42353, 41610, 36134, 51753, 37690, 52404, 36262, 35634, 37457, 36150, 43468, 39522, 44761, 44169, 37574, 36246, 36058, 39378, 39266, 71138, 39226, 38598, 43978, 38706, 21844, 39474, 43114, 39090, 42922, 35994, 38257, 35430, 36050, 42594, 40154, 39282, 43556, 45525, 36250, 58725, 44456, 35490, 38537, 36018, 37658, 41778, 37990, 47817, 36146, 59049, 40618, 39078, 56137, 35370, 38545, 71048, 38216, 43461, 45676, 35466, 38450, 43332, 39706, 38514, 38729, 46521, 42073, 46248, 44356, 35562, 40114, 36054, 39332, 35514, 39538, 36006, 38609, 41577, 37585, 39306, 37544, 42729, 38500, 36198, 42068, 72785, 39524, 41556, 39268, 39348, 38086, 35754, 34474, 39849, 37684, 38118, 41636, 67898, 42344, 41673, 42565, 38184, 39220, 36042, 37580, 90404, 38212, 38604, 42596, 46548, 39500, 39756, 42857, 21842, 38312, 50901, 46709, 39276, 37708, 39114, 37676, 38289, 37204, 35502, 40138, 38508, 21834, 43989, 21802, 21674, 38248, 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if n >= 5000:
return bin(a[n-1])[2:]
# finding a lower limit
# lets start the raw, computionally intensive brainfuck (i mean that language)
# this looks like it could be done with a C for
i = 0
while True:
b = bin(i)[2:]
res = tester(b)
if res == n:
return b
i += 1
### TEST AREA BEGINS ###
# this function tests the string (and decrements it by 1 as "" isnt consireded as a subseq by spec)
# dont even try to understand this, me does not understand it either (or so i say ( ͡° ͜ʖ ͡°))
def tester(a, verbosity=0):
# technical styff
n = len(a)
last = {}
dp = {}
dp[-1] = 1 # we haz to haz this start value
# O(n) iteration over errytin'
for i in range(n):
if verbosity > 2: print("\nCHAR", a[i], "at", i)
dp[i] = 2*dp[i-1]
if a[i] in last:
if verbosity > 2: print("before at pos", last[a[i]], "({}-{})".format(dp[i], dp[last[a[i]]]))
dp[i] -= dp[last[a[i]]]
last[a[i]] = i - 1
if verbosity > 2:
print("dp:", dp[i])
print("last:", last[a[i]])
# substract the starting value from result
result = dp[n-1] - dp[-1]
# lastly, remove the oil well used in calculi before printing debug info
del(dp[-1])
# end result debug info
if verbosity > 1:
print("\n### RESULT ###")
print("str:", a)
print("len:", repr(n))
print("distinct chars:", len(last))
print("last:", repr(last))
print("distinct:", repr(dp))
print("result:", result)
if verbosity == 1:
print(result)
return result
# a simple loop around tester()
# looks very understandable :D
def loop(verbosity=3):
while True:
t = input("> ")
if t == "": break
tester(t, verbosity)
# an advanced loop around tester()
def mass(n):
q = {}
for i in range(n):
r = tester(bin(i)[2:])
if r not in q:
q[r] = []
q[r].append(i)
# clean them
q = {i: clean(j) for i, j in q.items()}
return q
# test cleansing func
def clean(a):
# first: take just the shortest
e = [bin(i)[2:] for i in a]
r = len(min(e, key=len))
a = [i for i in e if len(i) == r]
# second: clear repetitive answers
# thats some heavily modified for loop here
i = 0
while True:
if len(a) <= i:
break
# pop reversed copies
if a[i][::-1] != a[i] and a[i][::-1] in a:
a.pop(i)
continue
i += 1
return a
### TEST AREA ENDS ###
# lets module thihs
if __name__ == 'niam'[::-1].join(['_'*2]*2):
print(main(int(input())))
# an empty line in end of script cuz why not?