#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char n,i; for(i='a';i<='z';i=i+1){ cout<<i<<" "; } for(n='Z';n>='A';n=n-1){ cout<<n<<" "; } return 0; }