BestCoder 1st Anniversary (HDU 5311)

http://bestcoder.hdu.edu.cn/contests/contest_chineseproblem.php?cid=610&pid=1002

#include <stdio.h>
#include <string.h>
char s[101],con[]="anniversary";
int main()
{
    int T,n,m,len,f;
    scanf("%d",&T);
    while(T--)
    {
        scanf("%s",s);
        len=strlen(s);
        f=0;
        for(int i=1; i<=9; i++)
        {
            int k=0,pos;
            while(k<len&&strncmp(con,s+k,i)!=0)
            {
                k++;
            }
            if(k==len)
            {
                break;
            }
            k+=i;
            pos=k;
            for(int j=1; j<=10-i; j++)
            {
                k=pos;
                while(k<len&&strncmp(con+i,s+k,j)!=0)
                {
                    k++;
                }
                if(k==len)
                {
                    break;
                }
                k+=j;
                while(k<len&&strncmp(con+i+j,s+k,11-(i+j))!=0)
                {
                    k++;
                }
                if(k!=len)
                {
                    f=1;
                    break;
                }
            }
            if(f==1)
            {
                break;
            }
        }
        if(f==0)
        {
            printf("NO
");
        }
        else
        {
            printf("YES
");
        }
    }
    return 0;
}