hdu 1719

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HDU 1719 Friend 规律题

解题报告:规定数字1和数字2是Friend number,然后规定,若a和b是Friend number,那么a*b+a+b也是Friend number,输入一个数,让你判断这个数是否是Friend number. Friend number = (2^x)*(3^y)-1:如果判断出某个数能满足这个关系,则这个数就是Friend number. #include<cstdio> <<-; int main() { int n; while(scanf("%d"…

Friend Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2073 Accepted Submission(s): 1046 Problem Description Friend number are defined recursively as follows. (1) numbers 1 and 2 are friend…

HDU-1719 Friend 数学推导

Friend HDU - 1719 Friend number are defined recursively as follows. (1) numbers 1 and 2 are friend number; (2) if a and b are friend numbers, so is ab+a+b; (3) only the numbers defined in (1) and (2) are friend number. Now your task is to judge wheth…

HDU——PKU题目分类

HDU 模拟题, 枚举1002 1004 1013 1015 1017 1020 1022 1029 1031 1033 1034 1035 1036 1037 1039 1042 1047 1048 1049 1050 1057 1062 1063 1064 1070 1073 1075 1082 1083 1084 1088 1106 1107 1113 1117 1119 1128 1129 1144 1148 1157 1161 1170 1172 1177 1197 1200 1201…

【转载】图论 500题——主要为hdu/poj/zoj

转自——http://blog.csdn.net/qwe20060514/article/details/8112550 =============================以下是最小生成树+并查集======================================[HDU]1213 How Many Tables 基础并查集★1272 小希的迷宫基础并查集★1325&&poj1308 Is It A Tree? 基础并查集★1856 More i…

HDU 5643 King's Game 打表

King's Game 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5643 Description In order to remember history, King plans to play losephus problem in the parade gap.He calls n(1≤n≤5000) soldiers, counterclockwise in a circle, in label 1,2,3...n. The firs…

转载：hdu 题目分类（侵删）

转载:from http://blog.csdn.net/qq_28236309/article/details/47818349 基础题: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. 1094.1095.1096.1097.1098.1106.1108.1157.116…