Stacks and Queues - 07. Truck Tour

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Advanced
{
    class Program
    {
        static void Main(string[] args)
        {
            int numberOfPumps = int.Parse(Console.ReadLine());
            var pumpIndex = new Queue<int>();

            var fuel = 0;

            for (int i = 0; i < numberOfPumps; i++)
            {
                var input = Console.ReadLine().Split().Select(int.Parse).ToArray();

                var pompCapacity = input[0];
                var distance = input[1];

                fuel += pompCapacity;

                if (fuel >= distance)
                {
                    pumpIndex.Enqueue(i);
                    fuel -= distance;
                }
                else
                {
                    pumpIndex.Clear();
                    fuel = 0;
                }
            }
            Console.WriteLine(pumpIndex.Min());

        }
    }
}