Submission #921388

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Source Code Expand

using System;
using System.Linq;
using System.Linq.Expressions;
using System.Collections.Generic;
using Debug = System.Diagnostics.Debug;
using StringBuilder = System.Text.StringBuilder;
using System.Numerics;
using Number = System.Int64;

namespace Program
{
    public class Solver
    {
        public void Solve()
        {
            var n = sc.Integer();
            var root = new Trie();
            var s = sc.Scan(n);
            for (int i = 0; i < n; i++)
                root.Add(s[i]);
            root.dfs();
            var q = sc.Integer();
            var ans = new int[q];
            var Q = Enumerate(n, x => new List<KeyValuePair<int, string>>());
            for (int i = 0; i < q; i++)
                Q[sc.Integer() - 1].Add(new KeyValuePair<int, string>(i, sc.Scan()));
            var a = Enumerate(26, x => new int[26]);
            for (int i = 0; i < n; i++)
            {
                for (int j = 0; j < 26; j++)
                    for (int k = 0; k < 26; k++)
                        a[j][k] = 0;
                var v = root.f(s[i], a);
                foreach (var kv in Q[i])
                {
                    ans[kv.Key] += v + 1;
                    for (int j = 0; j < 26; j++)
                        for (int k = j + 1; k < 26; k++)
                            ans[kv.Key] += a[kv.Value[j] - 'a'][kv.Value[k] - 'a'];
                }
            }
            foreach (var x in ans)
                IO.Printer.Out.WriteLine(x);



        }
        public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());
        static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }
        static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
    }
}
#region main
static class Ex
{
    static public string AsString(this IEnumerable<char> ie) { return new string(System.Linq.Enumerable.ToArray(ie)); }
    static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie); }
    static public void Main()
    {
        var solver = new Program.Solver();
        solver.Solve();
        Program.IO.Printer.Out.Flush();
    }
}
#endregion
#region Ex
namespace Program.IO
{
    using System.IO;
    using System.Text;
    using System.Globalization;
    public class Printer: StreamWriter
    {
        static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; }
        public static Printer Out { get; set; }
        public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
        public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
        public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { }
        public void Write<T>(string format, T[] source) { base.Write(format, source.OfType<object>().ToArray()); }
        public void WriteLine<T>(string format, T[] source) { base.WriteLine(format, source.OfType<object>().ToArray()); }
    }
    public class StreamScanner
    {
        public StreamScanner(Stream stream) { str = stream; }
        public readonly Stream str;
        private readonly byte[] buf = new byte[1024];
        private int len, ptr;
        public bool isEof = false;
        public bool IsEndOfStream { get { return isEof; } }
        private byte read()
        {
            if (isEof) return 0;
            if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } }
            return buf[ptr++];
        }
        public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; }

        public string Scan()
        {
            var sb = new StringBuilder();
            for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
                sb.Append(b);
            return sb.ToString();
        }
        public string ScanLine()
        {
            var sb = new StringBuilder();
            for (var b = Char(); b != '\n'; b = (char)read())
                if (b == 0) break;
                else if (b != '\r') sb.Append(b);
            return sb.ToString();
        }
        public long Long()
        {
            if (isEof) return long.MinValue;
            long ret = 0; byte b = 0; var ng = false;
            do b = read();
            while (b != 0 && b != '-' && (b < '0' || '9' < b));
            if (b == 0) return long.MinValue;
            if (b == '-') { ng = true; b = read(); }
            for (; true; b = read())
            {
                if (b < '0' || '9' < b)
                    return ng ? -ret : ret;
                else ret = ret * 10 + b - '0';
            }
        }
        public int Integer() { return (isEof) ? int.MinValue : (int)Long(); }
        public double Double() { var s = Scan(); return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN; }
        private T[] enumerate<T>(int n, Func<T> f)
        {
            var a = new T[n];
            for (int i = 0; i < n; ++i) a[i] = f();
            return a;
        }

        public char[] Char(int n) { return enumerate(n, Char); }
        public string[] Scan(int n) { return enumerate(n, Scan); }
        public double[] Double(int n) { return enumerate(n, Double); }
        public int[] Integer(int n) { return enumerate(n, Integer); }
        public long[] Long(int n) { return enumerate(n, Long); }
    }
}
#endregion
#region Trie
public class Trie
{
    public bool ok;
    public int val;
    public Trie par;
    public Trie[] next = new Trie[26];
    public void Add(string s)
    {
        var t = this;
        for (int i = 0; i < s.Length; i++)
        {
            var v = s[i] - 'a';
            if (t.next[v] == null) t.next[v] = new Trie() { par = t };
            t = t.next[v];
        }
        t.ok = true;
        t.val++;
    }
    public int dfs()
    {
        for (int i = 0; i < 26; i++)
            if (next[i] != null) val += next[i].dfs();
        return val;
    }
    public int f(string s, int[][] a)
    {
        var ret = 0;
        var t = this;
        for (int i = 0; i < s.Length; i++)
        {
            if (t.ok) ret++;
            var v = s[i] - 'a';
            for (int j = 0; j < 26; j++)
            {
                if (v == j) continue;
                if (t.next[j] == null) continue;
                a[j][v] += t.next[j].val;
            }
            t = t.next[v];
        }
        return ret;
    }
}
#endregion

Submission Info

Judge Result