#include <iostream>
#include <fstream>
using namespace std;


int main(int argc, char** argv)
{
    ifstream file;
    int n = 0, min = 0, max = 0, min_stop = 0, max_stop = 0, total = 0, in, out , current = 0;
    file.open(argv[0]);

    if (file)
    {
        file >> n;
    }
    else
    {
        cout << " File not found" << endl; return 0;
    }

    file >> in >> out;
    current = in;
    min = current;
    max = current;
    min_stop = 0;
    max_stop = 0;
    total = in;



    for (int i = 1; i < n; i++)
    {
        file >> in >> out;
        current = current + in - out;
        total += in;


        if (current > max)
        {
            max = current;
            max_stop = i;
        }
        else if (current < min)
            {
                min = current;
                min_stop = i;
            }
    }

    file.close();

    cout << "total: " << total << endl;
    cout << "min: " << min << " at " << min_stop << endl;
    cout << "max: " << max << " at " << max_stop << endl;
    return 0;
}