include<stdio.h>

int main()

{

int n;

char A[51];
int a[51];
scanf("%d\n", &n);
int i;
for (i = 0;i<=50; i++)
{
    scanf("%c", &A[i]);//扫描字符
    a[i] = A[i];//存储ASCLL码
    if (a[i] == 10)break;//扫描到\0停止，字符串长度为i,用A[0~i-1]存储
    a[i] = (a[i] - 97 + n) % 26 + 97;//移动n位
}
for (int k = 0; k <= i - 1; k++)
{
    printf("%c", a[k]);//输出密码
}
return 0;

}