hdu 4492 Mystery

Input
The first line of input contains a single integer P, (1 <= P <= 1000), which is the number of data sets that follow. Each data set consists of several lines. Each data set should be processed identically and independently.

The first line of each data set contains an integer D which is the data set number. The second line contains no more than the 93 distinct printable ASCII characters. The third line contains an integer, N (1 <= N <=512 ), which is the number of integers on the next (fourth) line of the dataset. Each integer on the fourth line is in the range -X to X where X is the number of characters on the second line minus 1.

Output
For each data set there is one correct line of output. It contains the data set number (D) followed by a single space, followed by a string of length N made of the characters on the second line of the input data set.

Sample Input
4
1
MAC
3
1 1 1
2
IW2C0NP3OS 1RLDFA
22
0 3 3 -3 7 -8 2 7 -4 3 8 7 4 1 1 -4 5 2 5 -6 -3 -4
3
G.IETSNPRBU
17
2 4 5 -6 -1 -3 -2 -4 -4 1 -1 5 -3 4 1 -2 4
4
PIBN MRDSYEO
16
-4 4 -1 4 5 3 -5 4 -3 -3 -2 -5 -5 -3 1 3

Sample Output
1 ACM
2 ICPC 2013 WORLD FINALS
3 IN ST. PETERSBURG

4 SPONSORED BY IBM

这道题只要找到规律了就好做了，反正就是累加，你让我说怎么累加，我说不清，看一下代码就懂了

AC代码：

#include<stdio.h>#include<string.h>char a[100];int b[513];int main(){int p,q,n,s,len,temp,i;scanf("%d",&p);while(p--){scanf("%d",&q);getchar();gets(a);scanf("%d",&n);for(i=0;i<n;i++)scanf("%d",&b[i]);s=0;len=strlen(a);printf("%d ",q);for(i=0;i<n;i++){s+=b[i];temp=(s+len*n)%len;//注意这里一定要加上n*len,不然的话temp可能为负printf("%c",a[temp]);}printf("\n");}return 0;}