Daily question, Caesar code,

Background

A konjac is infatuated with “ Little bookboy ”, I forgot my password when I logged in one day （ He doesn't have a mailbox or mobile phone ）, So I left the problem to you .

Title Description

Although konjac forgets the password , But he remembered that the password was composed of a string . The password consists of the original string （ By no more than 50 Small letters make up ） Move each letter in the back nn Bit formed .z The next letter of is a, So circular . He now finds the original string and nn, Please find out the password .

Input format

first line ：n. The second line ： A string of letters before moving

Output format

a line , This is the password for this konjac

I/o sample

Input #1 Copy

1
qwe

Output #1 Copy

rxf

explain / Tips

String length <=50

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