Submission #1534995

---

Source Code Expand

using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Globalization;
using System.Diagnostics;
using static System.Console;
using Pair = System.Collections.Generic.KeyValuePair<int, int>;
//using System.Numerics;

class Program
{
    static void Main()
    {
        //SetOut(new StreamWriter(OpenStandardOutput()) { AutoFlush = false });
        new Program().solve();
        Out.Flush();
    }
    Scanner cin = new Scanner();
    Random rnd = new Random();
    Stopwatch sw = new Stopwatch();
    readonly int[] dd = { 0, 1, 0, -1, 0 };
    readonly int mod = 1000000007;
    readonly string alfa = "abcdefghijklmnopqrstuvwxyz";
    readonly string ALFA = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    int N;
    void solve()
    {
        N = cin.nextint;
        var P = new List<int>();
        eratos(P, 1000);
        var A = new long[1001];//素因数分解
        for (int i = 1; i <= N; i++)
        {
            int j = i;
            foreach (var item in P)
            {
                while (j % item  == 0)
                {
                    A[item]++;
                    j /= item;
                }
            }
        }
        long ans = 1;
        foreach (var item in A)
        {
            ans *= (item + 1);
            ans %= mod;
        }
        WriteLine(ans);
    }
    //2～nまでの素数のリスト(n>=2)
    void eratos(List<int> P, int n)
    {
        var a = new bool[n + 1];
        a[0] = a[1] = true;
        int i;
        for (i = 2; i * i <= n; i++)
        {
            if (!a[i])
            {
                P.Add(i);
                int j = i << 1;
                while (j <= n)
                {
                    a[j] = true;
                    j = j + i;
                }
            }
        }
        for (; i <= n; i++) if (!a[i]) P.Add(i);
    }

}

class Scanner
{
    string[] s; int i;
    char[] cs = new char[] { ' ' };
    public Scanner() { s = new string[0]; i = 0; }
    public string[] scan { get { return ReadLine().Split(); } }
    public int[] scanint { get { return Array.ConvertAll(scan, int.Parse); } }
    public long[] scanlong { get { return Array.ConvertAll(scan, long.Parse); } }
    public double[] scandouble { get { return Array.ConvertAll(scan, double.Parse); } }
    public string next
    {
        get
        {
            if (i < s.Length) return s[i++];
            string st = ReadLine();
            while (st == "") st = ReadLine();
            s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
            i = 0;
            return next;
        }
    }
    public int nextint { get { return int.Parse(next); } }
    public long nextlong { get { return long.Parse(next); } }
    public double nextdouble { get { return double.Parse(next); } }
}

Submission Info

Judge Result