Given 5 integers: a, b, c, d, k, you're to find x in a...b, y in c...d that GCD(x, y) = k. GCD(x, y) means the greatest common divisor of x and y. Since the number of choices may be very large, you're only required to output the total number of diffe…
/** 题目:hdu1695 GCD 链接:http://acm.hdu.edu.cn/status.php 题意:对于给出的 n 个询问,每次求有多少个数对 (x,y) , 满足 a ≤ x ≤ b , c ≤ y ≤ d ,且 gcd(x,y) = k ,(5,7),(7,5)看做同一对, gcd(x,y) 函数为 x 和 y 的最大公约数. 本题默认:a = c = 1; 0 < a <= b <= 100,000, 0 < c <= d <= 100,000,…
F - GCD Time Limit:3000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1695 Description Given 5 integers: a, b, c, d, k, you're to find x in a...b, y in c...d that GCD(x, y) = k. GCD(x, y) means the greatest c…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1695 题目解析: Given 5 integers: a, b, c, d, k, you're to find x in a...b, y in c...d that GCD(x, y) = k. 题目又说a==c==1,所以就是求[1,b]与[1,d]中gcd等于k的个数,因为若gcd(x,y)==z,那么gcd(x/z,y/z)==1,又因为不是z的倍数的肯定不是,所以不是z的倍数的可以直接去…
GCD Time Limit: / MS (Java/Others) Memory Limit: / K (Java/Others) Total Submission(s): Accepted Submission(s): Problem Description Given integers: a, b, c, d, k, you're to find x in a...b, y in c...d that GCD(x, y) = k. GCD(x, y) means the greatest…
Description Given 5 integers: a, b, c, d, k, you're to find x in a...b, y in c...d that GCD(x, y) = k. GCD(x, y) means the greatest common divisor of x and y. Since the number of choices may be very large, you're only required to output the total num…