結果
問題 | No.994 ばらばらコイン |
ユーザー | clocklr |
提出日時 | 2020-03-12 15:06:18 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,207 bytes |
コンパイル時間 | 899 ms |
コンパイル使用メモリ | 113,588 KB |
実行使用メモリ | 41,484 KB |
最終ジャッジ日時 | 2024-11-18 09:24:54 |
合計ジャッジ時間 | 4,040 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | WA | - |
testcase_01 | WA | - |
testcase_02 | AC | 25 ms
17,920 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | AC | 26 ms
17,920 KB |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | AC | 25 ms
17,792 KB |
testcase_17 | AC | 26 ms
17,920 KB |
testcase_18 | AC | 25 ms
18,048 KB |
testcase_19 | AC | 26 ms
17,920 KB |
testcase_20 | AC | 25 ms
17,920 KB |
testcase_21 | WA | - |
testcase_22 | WA | - |
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
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]--; int counter = 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 += counter; que.Enqueue(k); num[1]--; //WriteLine(1); } if(num[1] <= 0){ break; } } counter++; 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); } }