#include<stdio.h> int main() { int n,i,j; char a[55]; scanf("%d\n",&n); scanf("%s",a); if (n>=26) j=n%26; else j=n; for (i=0;a[i]!='\0';i++) { a[i]=a[i]+j; if (a[i]>'z') a[i]=a[i]-26; } printf("%s",a); return 0; }