1005 Spell It Right (20)(20 分) Given a non-negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English. Input Specification: Each input file contains one test case. Each case occupies one l…
PTA 7-2 邻接表创建无向图 (20分) 采用邻接表创建无向图G ,依次输出各顶点的度. 输入格式: 输入第一行中给出2个整数i(0<i≤10),j(j≥0),分别为图G的顶点数和边数. 输入第二行为顶点的信息,每个顶点只能用一个字符表示. 依次输入j行,每行输入一条边依附的顶点. 输出格式: 依次输出各顶点的度,行末没有最后的空格. 输入样例: 5 7 ABCDE AB AD BC BE CD CE DE 输出样例: 2 3 3 3 3 一道水题,无需建图也能AC,第一种方法无需建图,第二…
PTA 7-1 邻接矩阵表示法创建无向图 (20分) 采用邻接矩阵表示法创建无向图G ,依次输出各顶点的度. 输入格式: 输入第一行中给出2个整数i(0<i≤10),j(j≥0),分别为图G的顶点数和边数. 输入第二行为顶点的信息,每个顶点只能用一个字符表示. 依次输入j行,每行输入一条边依附的顶点. 输出格式: 依次输出各顶点的度,行末没有最后的空格. 输入样例: 5 7 ABCDE AB AD BC BE CD CE DE 输出样例: 2 3 3 3 3 一道水题,无需建图也能AC,第一种方…
Nasty Hacks Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3049 Accepted Submission(s): 2364 Problem Description You are the CEO of Nasty Hacks Inc., a company that creates small pieces of…
Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…
一.mysql中的优化 where语句的优化 1.尽量避免在 where 子句中对字段进行表达式操作select id from uinfo_jifen where jifen/60 > 10000;优化后:Select id from uinfo_jifen where jifen>600000; 2.应尽量避免在where子句中对字段进行函数操作,这将导致mysql放弃使用索引 select uid from imid where datediff(create_time,'2011-11…
SCU 4437 Carries Time Limit:0MS Memory Limit:0KB 64bit IO Format:%lld & %llu Practice Description Carries frog has nn integers a1,a2,…,ana1,a2,…,an, and she wants to add them pairwise. Unfortunately, frog is somehow afraid of carries (进位).…