题意 给一个数列 A A A,其中 A x A_x Ax可以进化到 A y A_y Ay的条件: 1 ) x < y 1)x<y 1)x<y 2 ) A x ∣ A x + 1 ∣ A x + 2 ∣ . . . ∣ A y < M 2)A_x|A_{x+1}|A_{x+2}|...|A_y<M 2)Ax∣Ax+1∣Ax+2∣...∣Ay<M 思路 我
Description The sequence of n − 1 consecutive composite numbers (positive integers that are not prime and not equal to 1) lying between two successive prime numbers p and p + n is called a prime gap