I Love You Too HDU 2816

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<queue>
using namespace std;

int main()
{
    char ss[1314],s[1314];
    char* a[]={"ABC","DEF","GHI","JKL","MNO","PQRS","TUV","WXYZ"};
    char b[]="KXVMCNOPHQRSZYIJADLEGWBUFT";
    char d[]="QWERTYUIOPASDFGHJKLZXCVBNM";
    //for(int i=0;i<26;i++)
    //    cout<<b[d[i]-‘A‘]<<" ";
    while(gets(ss))
    {
        int m=strlen(ss);
        int len=0;
        for(int i=0;i<m;i++)
            if(ss[i]!=‘ ‘)
                s[len++]=ss[i];
        char s0[520];
        int x=0;
        for(int i=0;i<len;i+=2)
        {
            s0[x++]=b[a[s[i]-‘2‘][s[i+1]-‘1‘]-‘A‘];
            
        }
        char s1[520];
        int y=0;
        for(int i=0;i<x;i+=2)
        {
            s1[i]=s0[y++];    
        }
        for(int i=1;i<x;i+=2)
        {
            s1[i]=s0[y++];
        }
        for(int i=y-1;i>=0;i--)
        {
            putchar(s1[i]);
        }
        printf("\n");
    }
}