結果

問題 No.994 ばらばらコイン
ユーザー clocklrclocklr
提出日時 2020-03-12 15:17:58
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 123 ms / 2,000 ms
コード長 4,240 bytes
コンパイル時間 874 ms
コンパイル使用メモリ 115,644 KB
実行使用メモリ 39,044 KB
最終ジャッジ日時 2024-11-18 09:53:43
合計ジャッジ時間 3,308 ms
ジャッジサーバーID
(参考情報)
judge5 / judge1
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 24 ms
24,036 KB
testcase_01 AC 25 ms
23,996 KB
testcase_02 AC 23 ms
25,788 KB
testcase_03 AC 118 ms
35,980 KB
testcase_04 AC 119 ms
35,972 KB
testcase_05 AC 71 ms
32,244 KB
testcase_06 AC 123 ms
39,044 KB
testcase_07 AC 121 ms
36,088 KB
testcase_08 AC 23 ms
26,040 KB
testcase_09 AC 115 ms
35,792 KB
testcase_10 AC 90 ms
35,860 KB
testcase_11 AC 101 ms
35,548 KB
testcase_12 AC 105 ms
35,328 KB
testcase_13 AC 26 ms
24,032 KB
testcase_14 AC 25 ms
23,872 KB
testcase_15 AC 25 ms
23,864 KB
testcase_16 AC 23 ms
23,988 KB
testcase_17 AC 25 ms
26,076 KB
testcase_18 AC 23 ms
22,068 KB
testcase_19 AC 25 ms
24,000 KB
testcase_20 AC 24 ms
24,112 KB
testcase_21 AC 25 ms
24,116 KB
testcase_22 AC 25 ms
24,000 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;
using System.Collections.Generic;
using System.Linq;
using static System.Console;
using static System.Math;

public class Hello{
    static public int mod = 1000000007;
    public static void Main(){
        var list = new List<List<int>>();
        var que = new Queue<int>();
        int[] num = inta();
        if(num[0] < num[1]){
            WriteLine(-1);
        }else{
            long ans = 0;
            for(int i=0;i<num[0]+1;i++){
                list.Add(new List<int>());
            }
            for(int i=0;i<num[0]-1;i++){
                int[] read = inta();
                if(read[0] < read[1]){
                    list[read[0]].Add(read[1]);
                }else{
                    list[read[1]].Add(read[0]);
                }
            }
            num[1]--;
            que.Enqueue(1);
            int quecount = que.Count;
            while(num[1] > 0){
                int pop = que.Dequeue();
                for(int i=0;i<quecount;i++){
                    foreach(var k in list[pop]){
                        ans++;
                        que.Enqueue(k);
                        num[1]--;
                        //WriteLine(1);
                        if(num[1] <= 0){
                        break;
                        }
                    }
                    if(num[1] <= 0){
                        break;
                    }
                }
                quecount = que.Count;
            }
            WriteLine(ans);
        }


        

        
        
        
    

        
        
        
        
    }
    // ncr mod
    static int ncr(int n,int r){r = Min(r,n-r);long nn = 1;for(int i=n-r+1;i<=n;i++){nn = nn*i%mod;}long rr = 1;for(int i=1;i<=r;i++){rr = rr*i%mod;}rr = square((int)rr,mod-2);nn = nn * rr %mod;return (int)nn;}
    // a^b mod
    static int square(int a,int b){string binary = Convert.ToString(b,2);int bileng = binary.Length;long a_power = a;long value = 1;for(int i=bileng-1;i>=0;i--){if(binary[i] == '1'){value = value*a_power%mod;}a_power = a_power*a_power%mod;}return (int)value;}
    //static int square2(long a,long b,long m){var list = new List<int>();int temp = 1;long n2 = a;list.Add(1);int count = 1;while(temp < b){list.Add((int)n2);temp*=2;count++;n2 = n2*n2%m;}long ret = 1;while(b > 0){if(temp <= b){b -= temp;ret = ret*list[count]%1000000007;}count--;temp/=2;}return(int)ret;}
    //各種読取
    static string rstr(){ return ReadLine(); }
    static int rint(){ return int.Parse(ReadLine()); }
    static long rlong(){ return long.Parse(ReadLine()); }
    static string[] stra(){ return ReadLine().Split(' '); }
    static int[] inta(){ string[] read_str_array = ReadLine().Split(' '); int[] return_int_array = new int[read_str_array.Length]; for(int countup_i=0;countup_i<read_str_array.Length;countup_i++){ return_int_array[countup_i] = int.Parse(read_str_array[countup_i]); } return return_int_array; }
    static int[,] inta2(int num_array,int in_array){ int[,] int_array2 = new int[num_array,in_array]; for(int i=0;i<num_array;i++){ int[] temp_array = inta(); for(int j=0;j<in_array;j++){ int_array2[i,j] = temp_array[j]; } } return int_array2; }
    static long[] longa(){ string[] read_str_array = ReadLine().Split(' '); long[] return_long_array = new long[read_str_array.Length]; for(long countup_i=0;countup_i<read_str_array.Length;countup_i++){ return_long_array[countup_i] = long.Parse(read_str_array[countup_i]); } return return_long_array; }
    static double[] doublea(){ string[] read_str_array = ReadLine().Split(' '); double[] return_double_array = new double[read_str_array.Length]; for(long countup_i=0;countup_i<read_str_array.Length;countup_i++){ return_double_array[countup_i] = long.Parse(read_str_array[countup_i]); } return return_double_array; }
    // -----------------------------
    static long divideup(long divided,long divid){ long temp_divide = divided/divid; if(divided % divid > 0){ temp_divide++; } return temp_divide; }
    static long GCD(long a,long b){ if(a < b){ long temp = a; a = b; b = temp; } if(a % b == 0){ return b; } else{ long temp = b; b = a%b; a = temp; return GCD(a,b); } }
    static long LCM(long a,long b){ return a * b / GCD(a,b); }
}
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