Specialized Four-Digit Numbers Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7358 Accepted Submission(s): 5415 Problem Description Find and list all four-digit numbers in decimal notation t…
Problem Description Find and list all four-digit numbers in decimal notation that have the property that the sum of its four digits equals the sum of its digits when represented in hexadecimal (base 16) notation and also equals the sum of its digits…
水题,暴力可解. #include <iostream> using namespace std; int chg(int n, int base); int main() { int i; int tmp; ; i<; i++) { tmp = chg(i, ); ) && tmp == chg(i, ) ) cout <<i<<endl; } } int chg(int n, int base) { ; ) { sum += n % base;…
2019 杭电多校 8 1003 题目链接:HDU 6659 比赛链接:2019 Multi-University Training Contest 8 Problem Description Acesrc is a famous mathematician at Nanjing University second to none. Playing with interesting numbers is his favorite. Today, he finds a manuscript whe…
http://acm.hdu.edu.cn/showproblem.php?pid=2817 __int64 pow_mod (__int64 a, __int64 n, __int64 m)快速幂取模函数. A sequence of numbers Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4047 Accepted Su…
A sequence of numbers Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4550 Accepted Submission(s): 1444 Problem Description Xinlv wrote some sequences on the paper a long time ago, they might…
ztr loves lucky numbers 题目链接: http://acm.hust.edu.cn/vjudge/contest/121332#problem/I Description ztr loves lucky numbers. Everybody knows that positive integers are lucky if their decimal representation doesn't contain digits other than 4 and 7. For…
Problem Description Give you a lot of positive integers, just to find out how many prime numbers there are. Input There are a lot of cases. In each case, there is an integer N representing the number of integers to find. Each integer won't exceed 32-…
Problem Description Xinlv wrote some sequences on the paper a long time ago, they might be arithmetic or geometric sequences. The numbers are not very clear now, and only the first three numbers of each sequence are recognizable. Xinlv wants to know…
Problem Description ztr loves lucky numbers. Everybody knows that positive integers are lucky if their decimal representation doesn't contain digits other than 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Lucky number is…
The expression N!, read as "N factorial," denotes the product of the first N positive integers, where N is nonnegative. So, for example, N N! 0 1 1 1 2 2 3 6 4 24 5 120 10 3628800 For this problem, you are to write a program that can compute the…
How many prime numbers Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 12955 Accepted Submission(s): 4490 Problem Description Give you a lot of positive integers, just to find out how many…
米勒罗宾素数测试: /* if n < 1,373,653, it is enough to test a = 2 and 3. if n < 9,080,191, it is enough to test a = 31 and 73. if n < 4,759,123,141, it is enough to test a = 2, 7, and 61. if n < 2,152,302,898,747, it is enough to test a = 2, 3, 5, 7,…
题意: 给一个正整数N,找最小的M,使得N可以整除M,且N/M是质数. 数据范围: There are multiple test cases (no more than 1,000). Each case contains only one positive integer N.N≤1,000,000,000.Number of cases with N>1,000,000 is no more than 100. 思路: N=M*prime 故必有M或prime小于等于sqrt(N)…
We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}. (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want. For example, if D = {'1','3','5'},…
We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}. (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want. For example, if D = {'1','3','5'},…
题目: We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}. (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want. For example, if D = {'1','3','5…
We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}. (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want. For example, if D = {'1','3','5'},…
HDU 1000 A + B Problem I/O HDU 1001 Sum Problem 数学 HDU 1002 A + B Problem II 高精度加法 HDU 1003 Maxsum 贪心 HDU 1004 Let the Balloon Rise 字典树,map HDU 1005 Number Sequence 求数列循环节 HDU 1007 Quoit Design 最近点对 HDU 1008 Elevator 模拟 HDU 1010 Tempter of th…
http://blog.csdn.net/jj12345jj198999/article/details/8951120 coursera上 web intelligence and big data 终于布置了HW7,这一次的要求是对一系列DNA序列进行预测,具体说明如下: Data Analytics Assignment (for HW7) Predict the Ethnicity of Individuals from their Genes ===================…
