結果
問題 | No.927 Second Permutation |
ユーザー |
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提出日時 | 2020-03-12 16:27:07 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 37 ms / 2,000 ms |
コード長 | 3,470 bytes |
コンパイル時間 | 1,132 ms |
コンパイル使用メモリ | 114,888 KB |
実行使用メモリ | 25,804 KB |
最終ジャッジ日時 | 2024-11-18 13:06:38 |
合計ジャッジ時間 | 2,927 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 27 |
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 long mod = 1000000007;public static void Main(){char[] cha = rstr().ToCharArray();Array.Sort(cha);Array.Reverse(cha);int leng = cha.Length;string ans = "";for(int i=leng-1;i>0;i--){if(i == 1 && (cha[i] == '0' || cha[i] == cha[i-1])){ans = "-1";break;}else if(cha[i] != cha[i-1]){char temp = cha[i];cha[i] = cha[i-1];cha[i-1] = temp;ans = new string(cha);break;}}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 modstatic 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 long square2(long a,long 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 value;}//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(longcountup_i=0;countup_i<read_str_array.Length;countup_i++){ return_long_array[countup_i] = long.Parse(read_str_array[countup_i]); } returnreturn_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); }}