using System; using System.IO; using System.Linq; using System.Text; using System.Collections.Generic; using System.Diagnostics; using System.Numerics; using Enu = System.Linq.Enumerable; class Program { static readonly int Mod = (int)1e9 + 7; void Add(ref int a, int b) { if ((a += b) >= Mod) a -= Mod; } public void Solve() { var range = Reader.IntTable(7); // min, max int maxVal = range.Max(r => r[1]); int even = (1 << 0) + (1 << 2) + (1 << 4) + (1 << 6); int odd = (1 << 1) + (1 << 3) + (1 << 5); int ans = (DP(range, even, odd) + DP(range, odd, even)) % Mod; Console.WriteLine(ans); } int DP(int[][] range, int lower, int upper) { int maxVal = range.Max(r => r[1]); var dp = new int[1 << range.Length]; dp[0] = 1; for (int val = 0; val <= maxVal; val++) { var next = new int[dp.Length]; for (int used = 0; used < (1 << range.Length); used++) { if (dp[used] == 0 || (used & lower) != lower && (used & upper) != 0) continue; Add(ref next[used], dp[used]); for (int i = 0; i < range.Length; i++) if ((used >> i & 1) == 0 && val >= range[i][0] && val <= range[i][1]) Add(ref next[used | 1 << i], dp[used]); } dp = next; } return dp.Last(); } } class Entry { static void Main() { new Program().Solve(); } } class Reader { private static TextReader reader = Console.In; private static readonly char[] separator = { ' ' }; private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries; private static string[] A = new string[0]; private static int i; private static void Init() { A = new string[0]; } public static void Set(TextReader r) { reader = r; Init(); } public static void Set(string file) { reader = new StreamReader(file); Init(); } public static bool HasNext() { return CheckNext(); } public static string String() { return Next(); } public static int Int() { return int.Parse(Next()); } public static long Long() { return long.Parse(Next()); } public static double Double() { return double.Parse(Next()); } public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); } public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); } public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); } public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); } public static string Line() { return reader.ReadLine().Trim(); } private static string[] Split(string s) { return s.Split(separator, op); } private static string Next() { CheckNext(); return A[i++]; } private static bool CheckNext() { if (i < A.Length) return true; string line = reader.ReadLine(); if (line == null) return false; if (line == "") return CheckNext(); A = Split(line); i = 0; return true; } }