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  • CSU 2018年12月月赛 F(2218): Finding prime numbers

    Description

    xrdog has a number set. There are 95 numbers in this set. They all have something in common and are all positive integers less than 500. The naughty xiao zhuan has deleted one of the numbers in the set. Can you find the number that xiao zhuan deleted?

    The following is a set of numbers after deleting a number:

    {131,193,5,479,179,101,199,137,23,401,157,197,313,167,127,7,379,109,13,29,73,229,83,239,97,37,53,347,293,113,311,467,47,373,2,151,337,263,461,367,223,103,389, 211,17,443,251,227,11,457,41,331,107,257,59,271,269,19,433,71,67,79,421,463,317,277,241,397,139,353,359,173,449,409,383,191,233,89,283,419,349,3,163,439, 31,181,307,431,61,43,149,487,491,281 }

    Input

    There is no input.

    Output

    Output a positive integer indicating the number that was deleted.

    Sample Input

    Non-existent

    Sample Output

    Unknown

    题意:辣鸡出题人,不考虑老年人老眼昏花,就是500内的素数,他给删了一个,要你找,又懒得全输进去,一个个的看,看到眼花缭乱,还有看到499没有。
    #include <iostream>
    #include <cstring>
    #include <cstdio>
    #include <algorithm>
    #include <math.h>
    #include <set>
    using namespace std;
    int n;
    int main()
    {
        printf("499
    ");
        return 0;
    }
    
    /**********************************************************************
        Problem: 2218
        User: therang
        Language: C++
        Result: AC
        Time:0 ms
        Memory:2024 kb
    **********************************************************************/
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  • 原文地址:https://www.cnblogs.com/jkzr/p/10163613.html
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