Envío 2687

Código

#include<bits/stdc++.h>
using namespace std;

int main(){
    string num;
    cin >> num;
    reverse(num.begin(),num.end());
    int car = 1;
    for(int i = 0; i < num.size() && car;++i){
        int check = num[i]-'0';
        ++check;
        num[i] = (check%10)+'0';
        car = check/10;
    }
    if(car) num += "1";
    reverse(num.begin(),num.end());
    cout << num << "\n";
}