hdu2672

god is a girl

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 1491    Accepted Submission(s): 697

Problem Description

One day,when I was dreaming,god went into my dream,she was pretty cute,just like /^_^\...
I really wanted to talked to her,but my English was so poor and she was not a national god but a foreign one...After thirty minutes,she flew away...but story was not finished here,she had left a letter for me!!!What puzzled me so much is the letter was encoded.I had thought for many days,but still can't get it. Now I turn to you for help,with some limited prompts,can you help me to decode the whole letter?

Prompts:
GDJIJ,EL SSJT UT YWOSQNIVZMI. -> HELLO,MY NAME IS LINDAINVERS.
CN WLP JRVMFGQ BVR,IJCFI? -> DO YOU REQUIRE AID,HUMAN?
NMAB VYNNF, FI'E VC HP IXJ ZLQZI. -> ONCE AGAIN, IT'S UP TO THE ELVES.
...

 

Input

There is multy cases,please process to EOF.
Each case is one line of string with uppercase letters and white spaces and other symbols.

 

Output

One line of the decoded string.

 

Sample Input

SGC CGGJX GC BMHVQ BGU BCIHNYNBX GNPLV!

 

Sample Output

THE FLOWS OF MAGIC ARE WHIMSICAL TODAY!

AC代码：
#include <iostream>
#include <cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
int a[10005];
void calc()//打表计算斐波那契数列
{
        a[1] = a[2] = 1;
        for(int i = 3; i < 10005; i++)
        {
                a[i] = a[i-1] + a[i-2];
                while(a[i] > 26)//字母序以26为周期
                        a[i] -= 26;
        }
}
int main()
{
        calc();
        char c;
        int i = 1;
        while( ~scanf("%c", &c) )
        {
                if(c == '\n')
                        i = 1;
                if( c > 64 && c < 92 )
                {
                        c += a[i];//对字母字符进行解码
                        while( c >= 91 )
                                c -= 26;//如果超出字母范围，则减一个周期(26)
                        i++;
                }
                cout<<c;
        }
        return 0;
}