#include 
    
     #include 
     
      #include 
      
       int main(){    char str[81];    int i;    while(gets(str)!=NULL)    {        if(strcmp(str,"!")==0)            break;        for(i=0;str[i]!='\0';i++)        {            if(str[i]>='a'&&str[i]<='z')                str[i]='a'+'z'-str[i];            else if(str[i]>='A'&&str[i]<='Z')                str[i]='A'+'Z'-str[i];        }        puts(str);    }    return 0;}