using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

public class Program
{

    public void Proc()
    {
        int itemCount = int.Parse(Reader.ReadLine());
        for (int i = 0; i < itemCount; i++)
        {
            int[] inpt = Reader.ReadLine().Split(' ').Select(a => int.Parse(a)).ToArray();
            this.NimList.Add(new Nimotsu(inpt[0], inpt[1]));
        }
        this.NimList = this.NimList.OrderBy(a => a.Size).ToList();
        this.Target = long.Parse(Reader.ReadLine());
        long tmp = this.NimList.Sum(a => a.Size);
        long min = GetMin(tmp, 1);
        long max = GetMax(tmp, 1);
        Console.WriteLine(min);
        Console.WriteLine(max==long.MaxValue?"inf":max.ToString());
	}

    private long Target;

    private long GetMax(long max, long min) {
		if (max - min <= 1)
		{
			long tmpMax = GetAns(0, max);
			long tmpMin = GetAns(0, min);
			if (Target >= tmpMax)
			{
				return long.MaxValue;
			}
			if (Target < tmpMin)
			{
				return -1;
			}
			if (tmpMax == Target)
			{
				return max;
			}
            return min;
		}

		long mid = (max + min) / 2;
        long midVal = GetAns(0, mid);
        if (midVal <= Target)
		{
			return GetMax(max, mid);
		}
		else
		{
			return GetMax(mid, min);
		}
	}

    private long GetMin(long max, long  min) {
        if(max-min<=1) {
            long tmpMax = GetAns(0, max);
            long tmpMin = GetAns(0, min);
            if(Target > tmpMax) {
                return long.MaxValue;
            }
            if(Target < tmpMin) {
                return -1;
            }
            if(tmpMin == Target) {
                return min;
            }
            return max;
        }

        long mid = (max + min) / 2;
        long midVal = GetAns(0, mid);
        if(midVal < Target) {
			return GetMin(max, mid);
		} else {
			return GetMin(mid, min);
        }
    }


    private Dictionary<int, Dictionary<long, long>> dic = new Dictionary<int, Dictionary<long, long>>();
    private long GetAns(int idx, long remainSize) {
		if (remainSize == 0)
		{
			return 0;
		}
		if (remainSize < 0)
		{
			return -1;
		}
        if(idx >= this.NimList.Count) {
            return 0;
        }
		if(!dic.ContainsKey(idx)) {
            dic.Add(idx, new Dictionary<long, long>());
        }
        if(dic[idx].ContainsKey(remainSize)) {
            return dic[idx][remainSize];
        }

        long ans = 0;
        if(this.NimList[idx].Size <= remainSize) {
            long tmp = GetAns(idx + 1, remainSize - this.NimList[idx].Size);
            if(tmp>=0) {
                ans = tmp + this.NimList[idx].Value;
            }
            tmp = GetAns(idx + 1, remainSize);
            if(tmp>=0) {
                ans = Math.Max(ans, tmp);
            }
        }
        dic[idx][remainSize] = ans;
        return ans;
	}

    private List<Nimotsu> NimList = new List<Nimotsu>();

    private class Nimotsu {
        public long Size;
        public long Value;
        public Nimotsu(long v, long s) {
            this.Size = s;
            this.Value = v;
        }
    }



    public class Reader
	{
		private static StringReader sr;
		public static bool IsDebug = false;
		public static string ReadLine()
		{
			if (IsDebug)
			{
				if (sr == null)
				{
					sr = new StringReader(InputText.Trim());
				}
				return sr.ReadLine();
			}
			else
			{
				return Console.ReadLine();
			}
		}
		private static string InputText = @"






3
5 3
9 8
3 2
8








";
	}

	public static void Main(string[] args)
	{
#if DEBUG
		Reader.IsDebug = true;
#endif
		Program prg = new Program();
		prg.Proc();
	}
}