#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 a; a = cin.get(); if ((a - 1) >= 32 && (a - 1) <= 126) { cout << a - 1 << endl; } else { cout << "Input Error!" << endl; } if ((a + 1) >= 32 && (a + 1) <= 126) { cout << a + 1 << endl; } else { cout << "Input Error!" << endl; } return 0; }