codeforces 213div(2) 365 A.Good Number 365 B.The Fibonacci Segment

#include <stdio.h>
#include <string.h>
bool vis[11];
int n, k;
bool judge(int x)
{
    memset(vis, false, sizeof(vis));
    if (x == 0)
        vis[0] = true;
    while (x)
    {
        vis[x%10] = true;
        x /= 10;
    }
    for (int i = 0; i <= k; i++)
        if (vis[i] == false)
            return false;
    return true;
}
int main()
{
    int x;
    while (scanf("%d %d", &n, &k) != EOF)
    {
        int ans = 0;
        for (int i = 1; i <= n; i++)
        {
            scanf("%d", &x);
            if (judge(x))
                ans++;
        }
        printf("%d
", ans);
    }
    return 0;
}

B,求序列中最长满足斐波那契性质的序列长度。

#include <stdio.h>

int a[100005];

int main()
{
    int n;
    while (scanf("%d", &n) != EOF)
    {
        int ans = 0;
        int len = 0;
        for (int i = 1; i <= n; i++)
        {
            scanf("%d", &a[i]);
            if (i > 2)
            {
                if (a[i] == a[i-1] + a[i-2])
                {
                    len++;
                    if (len > ans)
                        ans = len;
                }
                else
                {
                    len = 0;
                }
            }
        }
        if (n < 2)
            printf("%d
", n);
        else
            printf("%d
", ans+2);
    }
    return 0;
}