codeforces 327 B. Hungry Sequence

2021-01-22 12:41:43 浏览数 (1)

题目链接

题目就是让你输出n个数的序列,要保证该序列是递增的,并且第i个数的前面不能保护它的约数,我直接先对前100000的素数打表,然后输出前n个,so easy。

代码语言:javascript复制
//cf 191 B
#include <stdio.h>
#include <string.h>
int ans[100005];

bool vis[10000000];
int main()
{
    int cnt = 1;
    for (int i = 2; i < 1300000; i  )
    {
        if (vis[i])
            continue;
        for (int j = i i; j < 10000000; j  = i)
            vis[j] = true;
        if (!vis[i])
            ans[cnt  ] = i;
        if (cnt > 100000)
        {
            break;
        }
    }
    int n;
    while (scanf("%d", &n) != EOF)
    {
        for (int i = 1; i < n; i  )
            printf("%d ", ans[i]);
        printf("%dn", ans[n]);
    }
    return 0;
}

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