#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(){ for (char i='a';i<='z';i++){ cout<<i<<" "; } for (char j='Z';j>='A';j++){ cout<<j<<" "; } return 0; }