#include <iostream>
#include <vector>

int main()
{
    std::vector<int> values {};
    int n {};
    int m {0};

    while (std::cin >> n)
    {
        n = n + m;
        values.push_back(n);
        m++;
    }
    
    for (int i {0}; i < values.size(); ++i)
    {
        std::cout << values[i] << std::endl;
    }
}