結果

問題 No.748 yuki国のお財布事情
ユーザー mnznmnzn
提出日時 2019-12-28 12:03:32
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 262 ms / 2,000 ms
コード長 6,063 bytes
コンパイル時間 4,298 ms
コンパイル使用メモリ 114,876 KB
実行使用メモリ 29,184 KB
最終ジャッジ日時 2024-10-11 19:13:31
合計ジャッジ時間 9,126 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge4
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 32 ms
19,072 KB
testcase_01 AC 32 ms
19,072 KB
testcase_02 AC 32 ms
19,200 KB
testcase_03 AC 32 ms
19,200 KB
testcase_04 AC 32 ms
19,200 KB
testcase_05 AC 32 ms
19,456 KB
testcase_06 AC 31 ms
19,200 KB
testcase_07 AC 33 ms
19,328 KB
testcase_08 AC 31 ms
19,200 KB
testcase_09 AC 32 ms
18,944 KB
testcase_10 AC 32 ms
19,072 KB
testcase_11 AC 32 ms
19,328 KB
testcase_12 AC 33 ms
19,200 KB
testcase_13 AC 60 ms
22,944 KB
testcase_14 AC 80 ms
23,552 KB
testcase_15 AC 65 ms
23,680 KB
testcase_16 AC 120 ms
24,832 KB
testcase_17 AC 211 ms
28,416 KB
testcase_18 AC 239 ms
28,672 KB
testcase_19 AC 262 ms
29,184 KB
testcase_20 AC 237 ms
28,416 KB
testcase_21 AC 229 ms
28,544 KB
testcase_22 AC 32 ms
19,200 KB
testcase_23 AC 31 ms
19,328 KB
testcase_24 AC 31 ms
18,944 KB
testcase_25 AC 212 ms
28,288 KB
testcase_26 AC 231 ms
28,544 KB
testcase_27 AC 227 ms
28,544 KB
testcase_28 AC 191 ms
26,880 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc)
Copyright (C) Microsoft Corporation. All rights reserved.

ソースコード

diff # 

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

class Program
{
    static void Main(string[] args)
    {
        var N = sc.ReadInt();
        var M = sc.ReadInt();
        var K = sc.ReadInt();
        var ABC = new Tuple<int, int, long>[M];
        for (int i = 0; i < M; i++)
        {
            var a = sc.ReadInt();
            var b = sc.ReadInt();
            var c = sc.ReadLong();
            ABC[i] = Tuple.Create(a, b, c);
        }
        var Kx = sc.ReadIntArray(K);
        var uf = new UnionFind(N);

        long min = 0;
        for (int i = 0; i < K; i++)
        {
            var j = Kx[i] - 1;
            var a = ABC[j].Item1 - 1;
            var b = ABC[j].Item2 - 1;
            var c = ABC[j].Item3;
            min += c;
            uf.Union(a, b);
        }

        foreach (var abc in ABC.OrderBy(x => x.Item3))
        {
            var a = abc.Item1 - 1;
            var b = abc.Item2 - 1;
            var c = abc.Item3;
            if (!uf.Same(a, b))
            {
                uf.Union(a, b);
                min += c;
            }
        }

        var ans = ABC.Sum(x => x.Item3) - min;
        Console.WriteLine(ans);
    }
    class UnionFind
    {
        public int[] Parents { get; set; }
        public UnionFind(int n)
        {
            this.Parents = new int[n];
            for (int i = 0; i < n; i++)
            {
                this.Parents[i] = -1;
            }
        }
        public int Find(int x)
        {
            if (this.Parents[x] < 0) return x;
            this.Parents[x] = Find(this.Parents[x]);
            return this.Parents[x];
        }
        public int Size(int x)
        {
            return -this.Parents[this.Find(x)];
        }
        public bool Same(int x, int y)
        {
            return this.Find(x) == this.Find(y);
        }
        public bool Union(int x, int y)
        {
            x = this.Find(x);
            y = this.Find(y);
            if (x == y) return false;

            if (this.Size(x) < this.Size(y))
            {
                var tmp = x;
                x = y;
                y = tmp;
            }
            this.Parents[x] += this.Parents[y];
            this.Parents[y] = x;
            return true;
        }
        public int GetGroupCount()
        {
            return this.Parents.Count(p => p < 0);
        }
    }
    static Scanner sc = new Scanner();
}

class Scanner
{
    string[] S = new string[0];
    int Index = 0;
    char[] Separators = new char[] { ' ' };

    public string Next()
    {
        if (this.Index < this.S.Length) return this.S[this.Index++];
        var line = "";
        while (line == "") line = Console.ReadLine();
        this.S = line.Split(this.Separators, StringSplitOptions.RemoveEmptyEntries);
        if (this.S.Length == 0) return this.Next();
        this.Index = 0;
        return this.S[this.Index++];
    }
    public string ReadStr()
    {
        return this.Next();
    }
    public char ReadChar()
    {
        return this.Next()[0];
    }
    public int ReadInt()
    {
        return int.Parse(this.Next());
    }
    public uint ReadUInt()
    {
        return uint.Parse(this.Next());
    }
    public long ReadLong()
    {
        return long.Parse(this.Next());
    }
    public double ReadDouble()
    {
        return double.Parse(this.Next());
    }
    public Tuple<int, int> ReadTup(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<long, long> ReadTupLong(int add = 0)
    {
        return Tuple.Create(this.ReadLong() + add, this.ReadLong() + add);
    }
    public Tuple<int, int, int> ReadTup3(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<int, int, int, int> ReadTup4(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public int[] ReadIntArray(int n)
    {
        var array = new int[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadInt();
        }
        return array;
    }
    public long[] ReadLongArray(int n)
    {
        var array = new long[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadLong();
        }
        return array;
    }
    public double[] ReadDoubleArray(int n)
    {
        var array = new double[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadDouble();
        }
        return array;
    }
    public char[] ReadCharArray(int n)
    {
        var array = new char[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadChar();
        }
        return array;
    }
    public string[] ReadStrArray(int n)
    {
        var array = new string[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadStr();
        }
        return array;
    }
    public Tuple<long, long>[] ReadTupLongArray(int n, int add = 0)
    {
        var array = new Tuple<long, long>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTupLong(add);
        }
        return array;
    }
    public Tuple<int, int>[] ReadTupArray(int n, int add = 0)
    {
        var array = new Tuple<int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup(add);
        }
        return array;
    }
    public Tuple<int, int, int>[] ReadTup3Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup3(add);
        }
        return array;
    }
    public Tuple<int, int, int, int>[] ReadTup4Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup4(add);
        }
        return array;
    }
}
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