b21 := (1,1012,983)(2,448,1401)(3,193,179)(4,820,1338)(5,128,1566)(6,1386,545) (7,763,1734)(8,744,684)(9,825,141)(10,1100,559)(11,642,1403)(12,443,557) (13,1094,106)(14,667,1523)(15,365,238)(16,1668,1522)(17,1659,771)(18,583, 213)(19,1723,150)(20,1676,477)(21,155,311)(22,1607,833)(23,1367,410)(24, 1474,1300)(25,501,412)(26,1174,1354)(27,1585,1442)(28,764,1276)(29,286, 1011)(30,1380,1179)(31,633,1504)(32,1345,1147)(33,787,551)(34,1270,328) (35,1315,1663)(36,320,1323)(37,476,402)(38,1202,586)(39,928,1047)(40,752, 301)(41,945,987)(42,1615,856)(43,947,278)(44,281,1415)(45,657,110)(46, 863,692)(47,1459,260)(48,339,389)(49,297,1320)(50,1144,770)(51,1230,718) (52,314,58)(53,332,1404)(54,1626,729)(55,74,1693)(56,1753,380)(57,843, 1606)(59,751,1170)(60,1080,1210)(61,1160,890)(62,602,1092)(63,499,393) (64,92,846)(65,888,1050)(66,817,1007)(67,1755,226)(68,1636,122)(69,1726, 1003)(70,401,1675)(71,1439,108)(72,785,369)(73,840,409)(75,793,198)(76, 519,1577)(77,219,1584)(78,959,1351)(79,244,958)(80,1638,884)(81,330,1510) (82,776,827)(83,628,1737)(84,777,659)(85,1680,1428)(86,601,592)(87,269, 1261)(88,1449,451)(89,970,1516)(90,1706,1333)(91,1224,1346)(93,997,189) (94,765,1128)(95,973,103)(96,1091,1694)(97,201,1244)(98,413,791)(99,1746, 1216)(100,134,1054)(101,387,350)(102,936,518)(104,1730,836)(105,1347,883) (107,1226,656)(109,231,666)(111,435,1083)(112,1529,164)(113,224,173)(114, 733,504)(115,855,1601)(116,1313,891)(117,676,974)(118,674,399)(119,558, 1236)(120,1499,417)(121,991,806)(123,1435,944)(124,288,248)(125,1406, 1021)(126,1252,1634)(127,832,1482)(129,1463,1013)(130,162,184)(131,869, 739)(132,889,1266)(133,599,931)(135,900,853)(136,279,1598)(137,972,895) (138,580,903)(139,394,1454)(140,1704,397)(142,471,1066)(143,200,299)(144, 457,568)(145,1562,429)(146,372,1275)(147,1154,783)(148,996,1640)(149, 1027,1059)(151,1596,1658)(152,1071,493)(153,1183,834)(154,1736,1241)(156, 971,1040)(157,841,1727)(158,954,1667)(159,170,720)(160,1131,862)(161, 1086,1741)(163,1264,1140)(165,626,482)(166,541,896)(167,1745,1460)(168, 1163,1026)(169,520,761)(171,1639,195)(172,1016,270)(174,1721,596)(175, 1215,1742)(176,707,252)(177,590,1373)(178,921,703)(180,1466,1293)(181, 1221,605)(182,1703,1251)(183,1452,351)(185,1541,1010)(186,553,852)(187, 910,672)(188,1684,1407)(190,449,1731)(191,989,938)(192,303,1689)(194,982, 437)(196,404,280)(197,1588,1061)(199,1014,1440)(202,912,385)(203,975, 1481)(204,1569,1246)(205,1184,438)(206,483,1647)(207,525,1398)(208,1231, 957)(209,1698,907)(210,1747,1423)(211,665,1326)(212,1628,216)(214,1729, 1191)(215,643,1295)(217,1078,1201)(218,1299,1511)(220,920,1520)(221,1130, 1738)(222,609,615)(223,562,1507)(225,1328,342)(227,1135,1547)(228,1101, 1395)(229,1479,1056)(230,661,1661)(232,680,1515)(233,523,1024)(234,1387, 1006)(235,905,632)(236,502,470)(237,760,1599)(239,1550,1218)(240,1190, 1633)(241,1256,1002)(242,346,546)(243,835,875)(245,1472,613)(246,507, 1370)(247,489,263)(249,1619,1422)(250,479,620)(251,405,1436)(253,749,337) (254,307,1656)(255,932,868)(256,701,1044)(257,428,1402)(258,877,1502) (259,1557,1645)(261,767,1305)(262,426,276)(264,1123,1155)(265,521,1282) (266,588,376)(267,660,690)(268,1109,1257)(271,1141,1683)(272,304,498) (273,1735,801)(274,1171,1057)(275,870,317)(277,324,847)(282,837,1079) (283,396,398)(284,788,815)(285,1616,464)(287,1033,362)(289,631,447)(290, 1043,1669)(291,1416,1396)(292,1334,650)(293,1225,795)(294,969,1586)(295, 651,917)(296,1573,742)(298,1679,1260)(300,1058,423)(302,1222,1491)(305, 1465,1443)(306,1164,1111)(308,638,1213)(309,984,349)(310,826,1353)(312, 937,762)(313,1720,1269)(315,1493,952)(316,1531,1458)(318,446,1461)(319, 797,616)(321,876,1115)(322,528,1470)(323,1004,1594)(325,478,1572)(326, 1344,850)(327,367,371)(329,849,331)(333,627,719)(334,363,823)(335,1324, 572)(336,1355,338)(340,1438,645)(341,1168,450)(343,1611,452)(344,1532, 1627)(345,1196,364)(347,930,1186)(348,1595,1278)(352,796,473)(353,1204, 750)(354,1253,882)(355,646,1620)(356,564,374)(357,1339,1279)(358,1069, 1578)(359,1631,1053)(360,1001,1254)(361,548,978)(366,1632,976)(368,1446, 880)(370,1524,1308)(373,516,1151)(375,709,1284)(377,992,540)(378,1397, 1383)(379,1444,511)(381,1055,1476)(382,1374,1118)(383,1600,1437)(384, 1666,829)(386,1108,589)(388,1369,1630)(390,1368,496)(391,1045,990)(392, 858,461)(395,1208,1617)(400,1751,1235)(403,1432,560)(406,1287,735)(407, 608,1250)(408,879,1655)(411,1009,1453)(414,695,811)(415,1581,1233)(416, 697,1240)(418,1311,1157)(419,619,1267)(420,979,1242)(421,1464,1076)(422, 1046,1304)(424,556,1469)(425,567,1535)(427,664,678)(430,682,748)(431,768, 805)(432,830,1336)(433,618,1490)(434,1603,1159)(436,610,1662)(439,1543, 459)(440,1411,514)(441,1713,998)(442,1480,1167)(444,612,1220)(445,1508, 995)(453,1209,488)(454,1372,614)(455,497,1613)(456,1495,1112)(458,634, 1451)(460,738,1408)(462,1690,1528)(463,717,794)(465,1329,1707)(466,1425, 1020)(467,1194,1724)(468,1316,1161)(469,1301,506)(472,699,1618)(474,654, 677)(475,1060,993)(480,696,673)(481,1331,1330)(484,1031,799)(485,1153, 578)(486,1487,500)(487,810,1042)(490,1124,1711)(491,687,1702)(492,737, 1343)(494,743,792)(495,1023,1352)(503,1366,892)(505,1182,1175)(508,655, 1413)(509,898,851)(510,1410,1576)(512,766,1176)(513,814,1232)(515,741, 963)(517,946,1382)(522,1359,756)(524,1505,939)(526,716,547)(527,1602, 1212)(529,1391,1612)(530,1134,539)(531,1650,1312)(532,1651,691)(533,747, 857)(534,1688,1621)(535,873,1544)(536,1104,831)(537,617,1574)(538,727, 712)(542,1715,1258)(543,759,1070)(544,1318,663)(549,1561,1414)(550,694, 1521)(552,1146,804)(554,951,1471)(555,597,1389)(561,1635,1534)(563,1677, 575)(565,1483,955)(566,1571,1262)(569,582,1063)(570,1030,1468)(571,1296, 1385)(573,1173,919)(574,1691,1249)(576,1243,1527)(577,1558,1327)(579, 1653,1678)(581,894,721)(584,1549,779)(585,778,1381)(587,1427,1589)(591, 1363,1709)(593,1740,604)(594,1556,1563)(595,1018,1665)(598,1447,1575) (600,1733,1748)(603,1271,1649)(606,1384,1750)(607,1716,611)(621,649,915) (622,980,1319)(623,1375,1314)(624,1496,648)(625,1419,688)(629,1582,1142) (630,1722,637)(635,1310,1614)(636,1085,1393)(639,988,1138)(640,1629,1672) (641,981,1497)(644,1478,1580)(647,881,854)(652,1545,1321)(653,1644,1492) (658,999,1263)(662,669,1712)(668,1518,1106)(670,924,842)(671,1514,1642) (675,1552,1431)(679,838,1309)(681,1211,1654)(683,1084,1360)(685,1089, 1237)(686,1289,1591)(689,704,1187)(693,904,1728)(698,1752,1348)(700,948, 1430)(702,722,758)(705,1065,732)(706,1132,1700)(708,1022,800)(710,818, 1247)(711,942,1592)(713,1005,1034)(714,1325,1120)(715,1448,1145)(723, 1302,1699)(724,1553,848)(725,809,1583)(726,1093,1559)(728,866,1417)(730, 861,1362)(731,1498,1533)(734,1604,1008)(736,911,934)(740,994,1234)(745, 802,1551)(746,1255,1062)(753,1546,1166)(754,1450,1121)(755,803,1462)(757, 1590,1133)(769,1455,774)(772,1298,1200)(773,1156,966)(775,893,1126)(780, 1554,1268)(781,1501,1207)(782,887,1744)(784,871,1039)(786,1272,1245)(789, 844,790)(798,1687,1087)(807,1097,1143)(808,956,1605)(812,1420,1148)(813, 1719,1088)(816,1019,1162)(819,1500,1717)(821,1743,1485)(822,1429,1749) (824,940,1122)(828,1503,1412)(839,1670,1394)(845,874,1283)(859,1536,1445) (860,1337,1285)(864,960,1035)(865,1217,1199)(867,1710,1291)(872,913,1641) (878,1119,1110)(885,1107,986)(886,1214,1597)(897,1197,1206)(899,1239, 1624)(901,1409,985)(902,1259,1077)(906,1486,1673)(908,1178,1350)(909, 1509,1564)(914,1494,1646)(916,1025,1152)(918,967,1029)(922,1625,1732) (923,1228,1377)(925,1623,1705)(926,1579,1701)(927,1426,1280)(929,1506, 1568)(933,1273,1192)(935,1349,1068)(941,1288,1671)(943,1281,1098)(949, 1248,1340)(950,1125,1725)(953,1177,1180)(961,1695,1364)(962,1424,1697) (964,1565,1475)(965,1537,1441)(968,1127,1405)(977,1185,1137)(1000,1652, 1082)(1015,1708,1517)(1017,1610,1365)(1028,1223,1570)(1032,1484,1036) (1037,1457,1660)(1038,1048,1548)(1041,1682,1072)(1049,1342,1637)(1051, 1648,1685)(1052,1064,1739)(1067,1172,1193)(1073,1075,1488)(1074,1361, 1290)(1081,1238,1277)(1090,1434,1542)(1095,1540,1150)(1096,1195,1418) (1099,1371,1205)(1102,1587,1357)(1103,1188,1198)(1105,1714,1306)(1113, 1686,1149)(1114,1376,1692)(1116,1657,1390)(1117,1467,1456)(1129,1307, 1754)(1136,1203,1567)(1139,1593,1392)(1158,1513,1358)(1165,1322,1526) (1169,1609,1297)(1181,1555,1525)(1189,1696,1421)(1219,1519,1674)(1227, 1473,1286)(1229,1512,1379)(1265,1294,1433)(1274,1643,1477)(1292,1341, 1303)(1317,1538,1539)(1332,1608,1400)(1335,1560,1388)(1356,1622,1378) (1399,1681,1718)(1489,1530,1664);