A common typing error is to place your hands on the keyboard one row to the right of the correct position. Then ?Q? is typed as ?W? and ?J? is typed as ?K? and so on. Your task is to decode a message typed in this manner. 
输入格式
Input consists of several lines of text. Each line may contain digits, spaces, uppercase letters (except ?Q?, ?A?, ?Z?), or punctuation shown above [except back-quote (?)]. Keys labeled with words [Tab, Back Space, Control, etc.] are not represented in the input.
输出格式
You are to replace each letter or punctuation symbol by the one immediately to its left on the QWERTY keyboard shown above. Spaces in the input should be echoed in the output.
样例输入
O S, GOMR YPFSU/
样例输出
I AM FINE TODAY.
#include<stdio.h>
char *s="`1234567890-=QWERTYUIOP[]\ASDFGHJKL;'ZXCVBNM,./";
int main(){
int i;char c;
while((c=getchar())!=EOF){
for(i=0;s[i]&&s[i]!=c;i++);
if(s[i]) putchar(s[i-1]);
else putchar(c);
}
return 0;
}