HD Topic Categories

Category One (detail):

Category two:

Basic questions: 1000, 1001, 1004, 1005, 1008, 1012, 1013, 1014, 1017, 1019, 1021, 1028, 1029, 1032, 1037, 1040, 1048, 1056, 1058, 1061, 1070, 1076, 1089, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098, 1106, 1108, 1157, 1163, 1164, 1170, 1194, 1196, 1197, 1201, 1202, 1205, 1219, 1234, 1235, 1236, 1248, 1266, 1279, 1282, 1283, 1302, 1303, 1323, 1326, 1330, 1334, 1335, 1339, 1390, 1391, 1393, 1395, 1397, 1405, 1406, 1407, 1408, 1412, 1418, 1420, 1465, 1491, 1555, 1562, 1563, 1570, 1587, 1673, 1678, 1708, 1718, 1720, 1785, 1799, 1859, 1862, 1877, 1898, 1976, 1977, 1985, 1994, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034, 2035, 2039, 2040, 2042, 2043, 2048, 2049, 2051, 2053, 2055, 2056, 2057, 2060, 2061, 2071, 2073, 2075, 2076, 2078, 2081, 2083, 2088, 2090, 2092, 2093, 2095, 2096, 2097, 2098, 2099, 2101, 2103, 2106, 2107, 2109, 2113, 2114, 2115, 2123, 2131, 2132, 2133, 2135, 2136, 2137, 2138, 2139, 2143, 2148, 2153, 2156, 2161, 2162, 2164, 2178, 2186, 2192, 2200, 2201, 2212, 2304, 2309, 2317, 2401, 2500, 2502, 2503, 2504, 2519, 2520, 2521, 2523, 2524, 2535, 2537, 2539, 2547, 2548, 2549, 2550, 2551, 2552, 2555, 2560, 2561, 2562, 2566, 2567, 2568, 2700, 2710,


dp:1003, 1024, 1029, 1069, 1074, 1087, 1114, 1159, 1160, 1171, 1176, 1203, 1231, 1257, 1260, 1284, 1421, 1789, 1978, 2059, 2084, 2159, 2191, 2544, 2571, 2602, 2709,

Search: 1010, 1015, 1016, 1026, 1072, 1075, 1175, 1180, 1181, 1238, 1239, 1240, 1241, 1242, 1253, 1254, 1312, 1372, 1548, 1597, 1671, 1677, 1728, 1800, 1983, 2102, 2141, 2553, 2563, 2605, 2612, 2614, 1616, 2717

Greed: 1009, 1045, 1049, 1050, 1051, 1052, 1257, 1800, 2037, 2111, 2124, 2187, 2391, 2570

Math problems: 1018, 1065, 1071, 1115, 1141, 1162, 1212, 1220, 1492, 1593, 1701, 1722, 1798, 1840, 1999, 2036, 2080, 2086, 2089, 2105, 2108, 2134, 2303, 2393, 2438, 2529, 2547, 2548, 2552, 2554, 2601, 2603, 2701,

Recursion: 1133, 1143, 1207, 1249, 1267, 1284, 1290, 1297, 1396, 1992, 1995, 1996, 2013, 2014, 2044, 2045, 2046, 2047, 2050, 2064, 2065, 2067, 2068, 2070, 2077, 2085, 2151, 2154, 2160, 2190, 2501, 2512, 2563, 2569, 2709, 2716,

Strings: 1020, 1039, 1043, 1062, 1073, 1075, 1088, 1113, 1161, 1200, 1251, 1256, 1288, 1321, 1328, 1379, 1804, 1860, 1982, 1984, 2017, 2024, 2025, 2026, 2027, 2043, 2052, 2054, 2072, 2074, 2087, 2131, 2137, 2140, 2163, 2203, 2206, 2352, 2500, 2549, 2564, 2565, 2567, 2572, 2609, 2607, 2707, 2708, 2719, 2721, 2723,

Large number: 1002, 1042, 1133, 1250, 1297, 1715, 1753, 1865, 2100,

Screwing up: 1022, 1027, 1030, 1035, 1128, 1165, 1209, 1210, 1215, 1222, 1228, 1229, 1230, 1237, 1259, 1276, 1286, 1337, 1342, 1361, 1370, 1506, 1577, 1597, 1702, 1716, 1727, 1868, 1870, 1896, 1981, 1986, 1987, 1988, 1997, 1998, 1999, 2058, 2062, 2089, 2090, 2094, 2104, 2116, 2117, 2135, 2175, 2183, 2184, 2197, 2303, 2368, 2370, 2374, 2511, 2522, 2527, 2600, 2615, 2703, 2711, 2714, 2715, 2725,

Game: 1077, 1404, 1517, 1524, 1525, 1527, 1536, 1564, 1729, 1730, 1846, 1847, 1848, 1849, 1850, 2147, 2149, 2176, 2177, 2188

Female functions: 1085, 1171, 1398, 2079, 2082, 2110, 2152, 2189, 2566,

hash:1264, 1280, 1425, 1496, 1800, 2522, 2600,

Category three:

Attached: 2000-2099 are all water problems.

1001 That's all you have to say.

1002 Simple Large number

1003 DP Classic problem, maximum contiguous sub-segment and

1004 Simple Questions

1005 finding patterns (loop points)

1006 feel a little bt problem, I have not yet

1007 Classic Questions, nearest point to problem, with split treatment

1008 Simple Questions

1009 Greed

1010 Search questions, pruning is key

1011

1012 Simple Questions

1013 Simple questions (with a small trap)

1014 Simple Questions

1015 can be considered a search question.

1016 Classic Search

1017 Simple Math Questions

1018 Simple Math Questions

1019 Simple Math Questions

1020 Simple string Handling

1021 finding a regular math problem

1022 Data structure problems (application of stacks)

1023 Special Numbers (Catalan number)

1024 Classic DP, Max M sub-segment and

1025 Classic DP, maximum increment subsequence (with Nlogn method)

1026 Search

1027 Math problems (or using STL)

1028 Classic problems, Integer splitting, doing with a parent function

1029 Simple questions (the general method is easy to time out)

1030 simple questions, can be simulated

1031 Simple Questions

1032 Simple Questions

1033 Simulation Questions

1034 Candy sharing Game

1035 Simulation Questions

1036 Simple Questions

1037 simple questions, not general simple

1038 Simple Questions

1039 String Processing

1040 Simple questions, sorting

1041 simple questions, with large numbers

1042 Large Numbers

1043 Classic Search Questions, eight digital problems

1044 a somewhat troublesome search question

1045 Search questions, can be matched to do

1046 Simple Questions

1047 Simple large number

1048 Simple string processing

1049 Simple Questions

1050 Greed

1051 Classic Greedy, you can also use DP

1052 Greed

1053 greed, about Huffman encoding

10,542 points Matching

10,552 points Matching

1056 Simple Questions

1057 Simulation Questions

1058 Classic questions, ugly numbers, DP

1059 Classic problems, you can use a parent function or DP (not optimized for the topic will time out)

1060 Math Problems

1061 Math Problems

1062 Simple string processing

1063 Analogue Large number

1064 Simple Questions

1065 Simple Questions

1066 Math problems, finding patterns

1067

1068 Classic binary Matching

1069 Classic DP

1070 Simple Questions

1071 Simple Math Questions

1072 Search

1073 string processing

1074 DP

1075 Dictionary Tree

1076 Simple Questions

1077

1078 DP

1079 Game (DP)

DP

1081 Classic DP

1082 Simple Questions

10,832 points Matching

1084 Simple Questions

1085 female function

1086 Simple Geometry questions

1087 Simple DP

1088 string processing

1089~1096 (Practice 8 topics for input and output)

1097 Simple Math Questions

1098 Math problems, pay attention to find the law

1099 Math Problems

Simulation questions, enumerating

1002 1004 1013 1015 1017 1020 1022 1029 1031 1033 1034 1035 1036 1037 1039 1042 1047 1048 1049 1050 1057 1062 1063 1064 10 70 1073 1075 1082 1083 1084 1088 1106 1107 1113 1117 1119 1128 1129 1144 1148 1157 1161 1170 1172 1177 1197 1200 1201 1202 1205 1209 1212 (large number modulo) 1216 (linked list) 1218 1219 1225 1228 1229 1230 1234 1235 1236 1237 1239 1250

1256 1259 1262 1263 1265 1266 1276 1279 1282 1283 1287 1296 1302 1303 1304 1305 1306 1309 1311 1314

Complex simulations

Search, Recursive solution

1010 1016 1026 1043 (Shuang Guang) 1044 (BFS+DFS) 1045 1067 1072 1104 1175 1180 1195 1208 1226 1238 1240 1241 1242 1258 1271 1312 131 7

Bo Game

1079

Dynamic planning

1003 1024 1025 1028 1051 1058 1059 1069 1074 1078 1080 1081 1085 1087 1114 1158 1159 1160 1171 1176 1181 1203 1224 1227 12 31 1244 1248 1253 1254 1283 1300

Mathematics, recursion, regularity

1005 1006 1012 1014 1018 1019 1021 1023 1027 1030 1032 1038 1041 1046 1059 1060 1061 1065 1066 1071 (Calculus) 1097 1098 1099 11 00 1108 1110 1112 1124 1130 1131 1132 1134 1141 1143 1152 1155 (physics problem) 1163 1165 1178 1194 1196 (lowbit) 1210 1214 1200 1221 1 223 1249 1261 1267 1273 1290 1291 1292 1294 1297 1313 1316

Arithmetical

1164 1211 1215 1222 1286 1299

Calculate geometry

1086 1115 1147

Greedy

1009 1052 1055 1257

and check Set

1198 1213 1232 1272

Segment tree, discretization

1199 1255

Graph theory

Shortest-circuit-related issues 1142 1162 1217 1301

Two-point graph problem 1054 1068 1150 1151 1281

Other

1053 (Huffman) 1102 (MST) 1116 (Euler loop) 1233 (MST) 1269 (strong connectivity)

Data

1103 (heap + analog) 1166 (number tree group) 1247 1251 1285 (Topol) 1298

Hanoi series

1207

Nearest vertex to 1007

DP

1501 DP

1502 DP or memory

1503 DP

1504 Simulation

1505 DP

1506 DP

1507 2 points Matching

1508 Memorization Easy Point

1509 simulation

1510 DP

1511 Search can be over

1512 left-leaning tree

1513 DP

1514 DP

1515 DFS

1516 DP

1517 Game

1518 Search

1519 DP (indeterminate)

1520 Tree-like DP

1521 math problems, female functions, whatever. Actually, they can.

1522 Stable marriage

1523 DP

1524 Games

1525 Games

1526 Maxflow

1527 Games

1528 2 points Matching

1529 Simple Questions

1530 Largest Group

1531 differential constraints

1532 Maxflow Entry Question

1533 KM Or Minimum charge flow

1534 differential constraints

1535 differential constraints

1536 Games

1537 simulation plus permutation group theory code can be shorter, in fact, no need ...

1538 very interesting topics. It's said to be the interview topic for Microsoft Asia President

1539 Search

1540 Segment Tree

1541 tree-like array

1542 Discrete, Segment tree

1543 segment Tree

1544 Simple

1545 DP http://acm.hdu.edu.cn/forum/htm_data/18/0608/2050.html

1546 Search

1547 Simulation

1548 Simulation

1551 2 points Answer

1553

1554

1555 Simple

1556 tricks. Mathematical

1557 Search

1558 and check + line sentence

1559 DP

1560 Minus branch + search

1561 Tree-like DP

1562 violent between and 9999

1563 Simple

1564 game.

1565 Status DP

1566 mathematics

1567 simulation

1568 Large numbers

1569 min cut

1570 Mathematics

1571 the most part of the road

1572 Search

1573 Mathematics

1574 DP

1575 2 min

1576 number theory

1577 simulation, processing accuracy

1579 Memory

1580 DP

1582 Search

1583 Simulation

1584 Search

1585

1586

1587 Simple Topics

1591 simulation

1592 simple

1593 Mathematics

1594 Mathematics

1595 graph theory

1596 graph theory

1597 graph theory

1598 graph theory

1599 graph theory

HD Topic Categories