Envío 4955

Código

/// Write by Daniel Perez .PERAPRO
#include<bits/stdc++.h>

using namespace std;
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define pb push_back
#define ff first
#define ss second
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
using vi=vector<int>;
using vl=vector<ll>;
using pii=pair<int,int>;
char el = '\n';
char esp = ' ';

template<class T> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }

ostream& operator<<(ostream& os, const vector<int> &v){
    for(auto const &i: v){
        os<<i<<" ";
    }
    os<<'\n';
    return os;
}
string yes="YES";
string no="NO";

int main(){
	fast_io;
	/*
 	freopen("input.txt","r",stdin);
    freopen("output.txt","w",stdout);
    */
    string s1, s2 ="1";
    cin>>s1;
    
    if(s2.size() > s1.size()) swap(s1,s2);
    
    s2 = string(s1.size() - s2.size(), '0') + s2;
    
    string ans(s1.size(),'0');
    
    int carry = 0;
    
    reverse(s1.begin(), s1.end()); reverse(s2.begin(), s2.end());
    
    for(int i=0;i<s1.size();i++){
        int res = (s1[i] - '0') + (s2[i] - '0') + carry;
        ans[i] = '0' + res % 10;
        carry = res/10;
    }
    if(carry) ans.pb('0' + carry);
    reverse(ans.begin(), ans.end());
    cout<<ans<<el;
}

/*

*/