Answer

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;

int main() {
    string strang = " ";
    cin >> strang;
   for(int i = 0; i < strang.length(); i++)
   {
   char c = strang.at(i);
   int k = ((c - '0')+1) % 10;
   cout << k;
}
    return 0;
}