#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 a1,a2,a3,a4 cin>>a1>>a2>>a3>>a4; a1=(a1-97+1)%26+97; a2=(a2-97+1)%26+97; a3=(a3-97+1)%26+97; a4=(a4-97+1)%26+97； cout<<a1""a2""a3""a4; return 0; }