CF177D2.Encrypting Messages
普及/提高-
通过率:0%
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题目描述
The Smart Beaver from ABBYY invented a new message encryption method and now wants to check its performance. Checking it manually is long and tiresome, so he decided to ask the ABBYY Cup contestants for help.
A message is a sequence of n integers a1,a2,...,an . Encryption uses a key which is a sequence of m integers b1,b2,...,bm ( m<=n ). All numbers from the message and from the key belong to the interval from 0 to c−1 , inclusive, and all the calculations are performed modulo c .
Encryption is performed in n−m+1 steps. On the first step we add to each number a1,a2,...,am a corresponding number b1,b2,...,bm . On the second step we add to each number a2,a3,...,am+1 (changed on the previous step) a corresponding number b1,b2,...,bm . And so on: on step number i we add to each number ai,ai+1,...,ai+m−1 a corresponding number b1,b2,...,bm . The result of the encryption is the sequence a1,a2,...,an after n−m+1 steps.
Help the Beaver to write a program that will encrypt messages in the described manner.
输入格式
The first input line contains three integers n , m and c , separated by single spaces.
The second input line contains n integers ai ( 0<=ai<c ), separated by single spaces — the original message.
The third input line contains m integers bi ( 0<=bi<c ), separated by single spaces — the encryption key.
The input limitations for getting 30 points are:
- 1<=m<=n<=103
- 1<=c<=103
The input limitations for getting 100 points are:
- 1<=m<=n<=105
- 1<=c<=103
输出格式
Print n space-separated integers — the result of encrypting the original message.
输入输出样例
输入#1
4 3 2 1 1 1 1 1 1 1
输出#1
0 1 1 0
输入#2
3 1 5 1 2 3 4
输出#2
0 1 2
说明/提示
In the first sample the encryption is performed in two steps: after the first step a=(0,0,0,1) (remember that the calculations are performed modulo 2), after the second step a=(0,1,1,0) , and that is the answer.