#include <bits/stdc++.h>
struct longNumber{
    longNumber(std::vector<unsigned int> init) : digits(init){};
    longNumber(unsigned int a) : digits(std::vector<unsigned int>(a)){};
    std::vector<unsigned int> digits;
};

longNumber operator+(const longNumber &a, const longNumber &b){
    longNumber retNum{std::max(a.digits.size(),b.digits.size()) + 1};
    unsigned int step = 0;
    unsigned int rest = 0;
    while(step < a.digits.size() && step < b.digits.size()){
        retNum.digits[step] = (a.digits[step] + b.digits[step] + rest)%10;
        rest = (a.digits[step]+b.digits[step])/10;
        step++;
    }
    if(a.digits.size() > b.digits.size()){
        while(step < a.digits.size()){
            retNum.digits[step] = (a.digits[step] + rest)%10;
            rest = (a.digits[step]+rest)/10;
            step++;
        }
    }else{
        while(step < b.digits.size()){
            retNum.digits[step] = (b.digits[step] + rest)%10;
            rest = (b.digits[step]+rest)/10;
            step++;
        }
    }
    if(retNum.digits[retNum.digits.size()-1] == 0){
        retNum.digits.resize(retNum.digits.size()-1);
    }
    return retNum;
}
int main()
{
    longNumber a{std::vector<unsigned int>{0,0,0,1}};
    longNumber b{std::vector<unsigned int>{0,0,1}};
    longNumber c = a + b;
    for(int i = c.digits.size()-1; i >= 0; i--){
        std::cout << c.digits[i];
    }
}