#include <iostream>
#include <cstdio>
using namespace std;
int main ()
{
char n;
scanf ("%c",&n);
printf ("%c",n+1);
return 0;
}
#include <iostream>
#include <cstdio>
using namespace std;
int main ()
{
char n;
scanf ("%c",&n);
printf ("%c",n+1);
return 0;
}