結果
| 問題 | No.2411 Reverse Directions |
| ユーザー |
 KumaTachiRen
|
| 提出日時 | 2023-08-11 21:50:03 |
| 言語 | C# (.NET 8.0.203) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 20,455 bytes |
| コンパイル時間 | 7,817 ms |
| コンパイル使用メモリ | 169,532 KB |
| 実行使用メモリ | 189,096 KB |
| 最終ジャッジ日時 | 2024-11-18 15:55:41 |
| 合計ジャッジ時間 | 11,788 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge5 |
（要ログイン）
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 | 41 ms
24,192 KB |
| testcase_01 | AC | 42 ms
24,064 KB |
| testcase_02 | AC | 41 ms
23,936 KB |
| testcase_03 | AC | 41 ms
23,936 KB |
| testcase_04 | AC | 58 ms
31,488 KB |
| testcase_05 | AC | 41 ms
24,064 KB |
| testcase_06 | AC | 40 ms
24,064 KB |
| testcase_07 | AC | 58 ms
29,568 KB |
| testcase_08 | AC | 41 ms
24,064 KB |
| testcase_09 | AC | 41 ms
23,936 KB |
| testcase_10 | WA | - |
| testcase_11 | WA | - |
| testcase_12 | WA | - |
| testcase_13 | AC | 55 ms
27,264 KB |
| testcase_14 | AC | 60 ms
29,440 KB |
| testcase_15 | WA | - |
| testcase_16 | AC | 50 ms
26,368 KB |
| testcase_17 | AC | 60 ms
28,288 KB |
| testcase_18 | AC | 57 ms
29,176 KB |
| testcase_19 | AC | 40 ms
24,192 KB |
| testcase_20 | AC | 59 ms
27,392 KB |
| testcase_21 | AC | 59 ms
27,776 KB |
| testcase_22 | AC | 77 ms
30,208 KB |
| testcase_23 | AC | 63 ms
27,264 KB |
| testcase_24 | AC | 83 ms
29,824 KB |
| testcase_25 | AC | 54 ms
26,880 KB |
| testcase_26 | WA | - |
| testcase_27 | AC | 58 ms
27,008 KB |
| testcase_28 | AC | 73 ms
31,744 KB |
| testcase_29 | WA | - |
| testcase_30 | AC | 79 ms
32,384 KB |
| testcase_31 | AC | 70 ms
189,096 KB |
コンパイルメッセージ
復元対象のプロジェクトを決定しています... /home/judge/data/code/main.csproj を復元しました (89 ms)。 MSBuild のバージョン 17.9.6+a4ecab324 (.NET) main -> /home/judge/data/code/bin/Release/net8.0/main.dll main -> /home/judge/data/code/bin/Release/net8.0/publish/
ソースコード
using System;
using System.ComponentModel;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.IO;
using System.Linq;
using System.Numerics;
using System.Runtime.Intrinsics.X86;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using static Functions;
using static OutputLib;
using ModInt = StaticModInt<Mod998244353>;
static class Program
{
static public void Main(string[] args)
{
Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false });
new Solver();
Console.Out.Flush();
}
}
public class Solver
{
public Solver()
{
Solve();
}
void Solve()
{
int h = ri, w = ri, k = ri, l = ri - 1, r = ri;
var s = new string[h];
for (int i = 0; i < h; i++) s[i] = rs;
var d1 = new int[h, w];
for (int i = 0; i < h; i++)
for (int j = 0; j < w; j++)
d1[i, j] = h * w * 2;
d1[0, 0] = 0;
var qu = new Queue<(int x, int y)>();
qu.Enqueue((0, 0));
while (qu.Count > 0)
{
var (x, y) = qu.Dequeue();
for (int i = 0; i < 4; i++)
{
int nx = x + dx[i];
int ny = y + dy[i];
if (!Safe(nx, ny, h, w)) continue;
if (s[nx][ny] == '#') continue;
if (d1[nx, ny] > d1[x, y] + 1)
{
d1[nx, ny] = d1[x, y] + 1;
qu.Enqueue((nx, ny));
}
}
}
var d2 = new int[h, w];
for (int i = 0; i < h; i++)
for (int j = 0; j < w; j++)
d2[i, j] = h * w * 2;
d2[h - 1, w - 1] = 0;
qu = new Queue<(int x, int y)>();
qu.Enqueue((h - 1, w - 1));
while (qu.Count > 0)
{
var (x, y) = qu.Dequeue();
for (int i = 0; i < 4; i++)
{
int nx = x + dx[i];
int ny = y + dy[i];
if (!Safe(nx, ny, h, w)) continue;
if (s[nx][ny] == '#') continue;
if (d2[nx, ny] > d2[x, y] + 1)
{
d2[nx, ny] = d2[x, y] + 1;
qu.Enqueue((nx, ny));
}
}
}
if ((r - l) % 2 != 0)
{
Yn(false);
return;
}
int k1 = k - (r - l);
if (d1[h - 1, w - 1] > k1 || (h + w - 2 - k1) % 2 != 0)
{
Yn(false);
return;
}
var dir = "DRUL";
for (int i = 0; i < h; i++)
for (int j = 0; j < w; j++)
{
if ((i + j + l) % 2 != 0) continue;
if (d1[i, j] > l) continue;
if (d2[i, j] > k - r) continue;
bool ok = false;
ok |= i > 0 && i + 1 < h && s[i - 1][j] == '.' && s[i + 1][j] == '.';
ok |= j > 0 && j + 1 < w && s[i][j - 1] == '.' && s[i][j + 1] == '.';
if (!ok) continue;
Yn(true);
var moves = new List<char>();
int x = i, y = j;
for (int loop = 0; loop < l; loop++)
{
if (x != 0 || y != 0)
{
for (int d = 0; d < 4; d++)
{
int nx = x + dx[d];
int ny = y + dy[d];
if (!Safe(nx, ny, h, w)) continue;
if (d1[nx, ny] == d1[x, y] - 1)
{
x = nx;
y = ny;
moves.Add(dir[(d + 2) & 3]);
break;
}
}
}
else
{
for (int d = 0; d < 4; d++)
{
int nx = x + dx[d];
int ny = y + dy[d];
if (!Safe(nx, ny, h, w)) continue;
x = nx;
y = ny;
moves.Add(dir[(d + 2) & 3]);
break;
}
}
}
moves.Reverse();
if (i > 0 && i + 1 < h && s[i - 1][j] == '.' && s[i + 1][j] == '.')
{
for (int c = 0; c < (r - l) / 2; c++)
{
moves.Add(dir[0]);
moves.Add(dir[2]);
}
}
else
{
for (int c = 0; c < (r - l) / 2; c++)
{
moves.Add(dir[1]);
moves.Add(dir[3]);
}
}
x = i; y = j;
for (int loop = 0; loop < k - r; loop++)
{
if (x != h - 1 || y != w - 1)
{
for (int d = 0; d < 4; d++)
{
int nx = x + dx[d];
int ny = y + dy[d];
if (!Safe(nx, ny, h, w)) continue;
if (d2[nx, ny] == d2[x, y] - 1)
{
x = nx;
y = ny;
moves.Add(dir[d]);
break;
}
}
}
else
{
for (int d = 0; d < 4; d++)
{
int nx = x + dx[d];
int ny = y + dy[d];
if (!Safe(nx, ny, h, w)) continue;
x = nx;
y = ny;
moves.Add(dir[d]);
break;
}
}
}
WriteJoin("", moves);
return;
}
Yn(false);
}
readonly int[] dx = { 1, 0, -1, 0 }, dy = { 0, 1, 0, -1 };
bool Safe(int x, int y, int h, int w) => 0 <= x && x < h && 0 <= y && y < w;
const long INF = 1L << 60;
int ri { [MethodImpl(256)] get => (int)sc.Integer(); }
long rl { [MethodImpl(256)] get => sc.Integer(); }
uint rui { [MethodImpl(256)] get => (uint)sc.UInteger(); }
ulong rul { [MethodImpl(256)] get => sc.UInteger(); }
double rd { [MethodImpl(256)] get => sc.Double(); }
string rs { [MethodImpl(256)] get => sc.Scan(); }
string rline { [MethodImpl(256)] get => sc.Line(); }
public StreamScanner sc = new StreamScanner(Console.OpenStandardInput());
}
public static class Functions
{
[MethodImpl(256)]
public static int Popcount(ulong x)
{
x = (x & 0x5555555555555555UL) + ((x >> 1) & 0x5555555555555555UL);
x = (x & 0x3333333333333333UL) + ((x >> 2) & 0x3333333333333333UL);
x = (x & 0x0f0f0f0f0f0f0f0fUL) + ((x >> 4) & 0x0f0f0f0f0f0f0f0fUL);
x = (x & 0x00ff00ff00ff00ffUL) + ((x >> 8) & 0x00ff00ff00ff00ffUL);
x = (x & 0x0000ffff0000ffffUL) + ((x >> 16) & 0x0000ffff0000ffffUL);
x = (x & 0x00000000ffffffffUL) + ((x >> 32) & 0x00000000ffffffffUL);
return (int)x;
}
[MethodImpl(256)]
public static int Popcount(int x)
{
x = (x & 0x55555555) + ((x >> 1) & 0x55555555);
x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
x = (x & 0x0f0f0f0f) + ((x >> 4) & 0x0f0f0f0f);
x = (x & 0x00ff00ff) + ((x >> 8) & 0x00ff00ff);
x = (x & 0x0000ffff) + ((x >> 16) & 0x0000ffff);
return x;
}
[MethodImpl(256)]
public static int Ctz(long x)
{
if (x == 0) return -1;
return Popcount((ulong)((x & -x) - 1));
}
[MethodImpl(256)]
public static int CeilPow2(int n)
{
int x = 0;
while ((1 << x) < n) x++;
return x;
}
[MethodImpl(256)]
public static int SafeMod(int x, int m)
{
int r = x % m;
return r < 0 ? r + Math.Abs(m) : r;
}
[MethodImpl(256)]
public static long SafeMod(long x, long m)
{
long r = x % m;
return r < 0 ? r + Math.Abs(m) : r;
}
[MethodImpl(256)] public static int Sign(long x) => x == 0 ? 0 : (x < 0 ? -1 : 1);
[MethodImpl(256)] public static int Sign(double x) => x == 0 ? 0 : (x < 0 ? -1 : 1);
[MethodImpl(256)] public static int DigitSum(long n, int d = 10) { long s = 0; while (n > 0) { s += n % d; n /= d; } return (int)s; }
[MethodImpl(256)] public static long Floor(long a, long b) => a >= 0 ? a / b : (a + 1) / b - 1;
[MethodImpl(256)] public static long Ceil(long a, long b) => a > 0 ? (a - 1) / b + 1 : a / b;
[MethodImpl(256)] public static int Gcd(int a, int b) => b == 0 ? a : Gcd(b, a % b);
[MethodImpl(256)] public static long Gcd(long a, long b) => b == 0 ? a : Gcd(b, a % b);
[MethodImpl(256)] public static void Swap(ref int x, ref int y) { x ^= y; y ^= x; x ^= y; }
[MethodImpl(256)] public static void Swap(ref long x, ref long y) { x ^= y; y ^= x; x ^= y; }
[MethodImpl(256)] public static void Swap<T>(ref T x, ref T y) { T t = y; y = x; x = t; }
[MethodImpl(256)] public static T Clamp<T>(T x, T l, T r) where T : IComparable<T> => x.CompareTo(l) <= 0 ? l : (x.CompareTo(r) <= 0 ? x : r);
[MethodImpl(256)] public static T Clamp<T>(ref T x, T l, T r) where T : IComparable<T> => x = x.CompareTo(l) <= 0 ? l : (x.CompareTo(r) <= 0 ? x : r);
[MethodImpl(256)] public static void Chmin<T>(ref T x, T y) where T : IComparable<T> { if (x.CompareTo(y) > 0) x = y; }
[MethodImpl(256)] public static void Chmax<T>(ref T x, T y) where T : IComparable<T> { if (x.CompareTo(y) < 0) x = y; }
public static int LowerBound(long[] arr, long val, int l = -1, int r = -1) => LowerBound<long>(arr.AsSpan(), t => Sign(t - val), l, r);
public static int LowerBound(int[] arr, int val, int l = -1, int r = -1) => LowerBound<int>(arr.AsSpan(), t => t - val, l, r);
public static int LowerBound<T>(T[] arr, Func<T, int> comp, int l = -1, int r = -1) => LowerBound<T>(arr.AsSpan<T>(), comp, l, r);
public static int LowerBound<T>(Span<T> data, Func<T, int> comp, int l = -1, int r = -1)
{
if (data.Length == 0) return -1;
if (l == -1) l = 0;
if (r == -1) r = data.Length;
while (l < r)
{
int x = (l + r) / 2;
if (comp(data[x]) < 0) l = x + 1;
else r = x;
}
return l;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string ToBase2(long v, int digit = -1)
{
if (digit == -1)
{
digit = 0;
while ((v >> digit) > 0) digit++;
}
var c = new string[digit];
for (int i = 0; i < digit; i++) c[digit - 1 - i] = ((v >> i) & 1) == 0 ? "0" : "1";
return string.Join("", c);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static string ToBaseN(long v, int n, int digit = -1)
{
if (digit == -1)
{
digit = 0;
long pow = 1;
while (v >= pow) { digit++; pow *= n; }
}
var c = new int[digit];
for (int i = 0; i < digit; i++, v /= n) c[digit - 1 - i] = (int)(v % n);
return string.Join("", c);
}
}
public class StreamScanner
{
public StreamScanner(Stream stream) { str = stream; }
private readonly Stream str;
private readonly byte[] buf = new byte[1024];
private int len, ptr;
public bool isEof = false;
public bool IsEndOfStream { get { return isEof; } }
[MethodImpl(256)]
private byte read()
{
if (isEof) throw new EndOfStreamException();
if (ptr >= len)
{
ptr = 0;
if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; }
}
return buf[ptr++];
}
[MethodImpl(256)]
public char Char()
{
byte b = 0;
do b = read();
while (b < 33 || 126 < b);
return (char)b;
}
[MethodImpl(256)]
public string Line()
{
var sb = new StringBuilder();
for (var b = Char(); b != 10 && !isEof; b = (char)read()) sb.Append(b);
return sb.ToString();
}
[MethodImpl(256)]
public string Scan()
{
var sb = new StringBuilder();
for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b);
return sb.ToString();
}
[MethodImpl(256)]
public long Integer()
{
long ret = 0; byte b = 0; var ng = false;
do b = read();
while (b != '-' && (b < '0' || '9' < b));
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';
}
}
[MethodImpl(256)]
public ulong UInteger()
{
ulong ret = 0; byte b = 0;
do b = read();
while (b < '0' || '9' < b);
for (; true; b = read())
{
if (b < '0' || '9' < b) return ret;
else ret = ret * 10 + b - '0';
}
}
[MethodImpl(256)]
public double Double() => double.Parse(Scan());
}
public static class OutputLib
{
[MethodImpl(256)] public static void WriteJoin<T>(string s, IEnumerable<T> t) => Console.WriteLine(string.Join(s, t));
[MethodImpl(256)]
public static void WriteMat<T>(T[,] a)
{
int sz1 = a.GetLength(0);
int sz2 = a.GetLength(1);
for (int i = 0; i < sz1; i++)
{
var b = new T[sz2];
for (int j = 0; j < sz2; j++) b[j] = a[i, j];
WriteJoin(" ", b);
}
}
[MethodImpl(256)] public static void WriteMat<T>(T[][] a) { for (int i = 0; i < a.Length; i++) WriteJoin(" ", a[i]); }
[MethodImpl(256)] public static void Write(object t) => Console.WriteLine(t.ToString());
[MethodImpl(256)] public static void Write(string str) => Console.WriteLine(str);
[MethodImpl(256)] public static void Write(string str, object arg1) => Console.WriteLine(str, arg1);
[MethodImpl(256)] public static void Write(string str, object arg1, object arg2) => Console.WriteLine(str, arg1, arg2);
[MethodImpl(256)] public static void Write(string str, object arg1, object arg2, object arg3) => Console.WriteLine(str, arg1, arg2, arg3);
[MethodImpl(256)] public static void Write(string str, params object[] arg) => Console.WriteLine(str, arg);
[MethodImpl(256)] public static void WriteFlush(object t) { Console.WriteLine(t.ToString()); Console.Out.Flush(); }
[MethodImpl(256)] public static void WriteError(object t) => Console.Error.WriteLine(t.ToString());
[MethodImpl(256)] public static void Flush() => Console.Out.Flush();
[MethodImpl(256)] public static void YN(bool t) => Console.WriteLine(t ? "YES" : "NO");
[MethodImpl(256)] public static void Yn(bool t) => Console.WriteLine(t ? "Yes" : "No");
[MethodImpl(256)] public static void yn(bool t) => Console.WriteLine(t ? "yes" : "no");
}
public interface IStaticMod
{
uint Mod { get; }
bool IsPrime { get; }
}
public readonly struct Mod1000000007 : IStaticMod
{
public uint Mod => 1000000007;
public bool IsPrime => true;
}
public readonly struct Mod998244353 : IStaticMod
{
public uint Mod => 998244353;
public bool IsPrime => true;
}
public readonly struct StaticModInt<T> : IEquatable<StaticModInt<T>>, IFormattable where T : struct, IStaticMod
{
internal readonly uint _v;
private static readonly T op = default;
public int Value => (int)_v;
public static int Mod => (int)op.Mod;
public static StaticModInt<T> Zero => default;
public static StaticModInt<T> One => new StaticModInt<T>(1u);
[MethodImpl(256)]
public static StaticModInt<T> Raw(int v)
{
var u = unchecked((uint)v);
return new StaticModInt<T>(u);
}
[MethodImpl(256)]
public StaticModInt(long v) : this(Round(v)) { }
[MethodImpl(256)]
public StaticModInt(ulong v) : this((uint)(v % op.Mod)) { }
[MethodImpl(256)]
private StaticModInt(uint v) => _v = v;
[MethodImpl(256)]
private static uint Round(long v)
{
var x = v % op.Mod;
if (x < 0) x += op.Mod;
return (uint)x;
}
[MethodImpl(256)]
public static StaticModInt<T> operator ++(StaticModInt<T> v)
{
var x = v._v + 1;
if (x == op.Mod) x = 0;
return new StaticModInt<T>(x);
}
[MethodImpl(256)]
public static StaticModInt<T> operator --(StaticModInt<T> v)
{
var x = v._v;
if (x == 0) x = op.Mod;
return new StaticModInt<T>(x - 1);
}
[MethodImpl(256)]
public static StaticModInt<T> operator +(StaticModInt<T> lhs, StaticModInt<T> rhs)
{
var v = lhs._v + rhs._v;
if (v >= op.Mod) v -= op.Mod;
return new StaticModInt<T>(v);
}
[MethodImpl(256)]
public static StaticModInt<T> operator -(StaticModInt<T> lhs, StaticModInt<T> rhs)
{
unchecked
{
var v = lhs._v - rhs._v;
if (v >= op.Mod) v += op.Mod;
return new StaticModInt<T>(v);
}
}
[MethodImpl(256)]
public static StaticModInt<T> operator *(StaticModInt<T> lhs, StaticModInt<T> rhs) => new StaticModInt<T>((uint)((ulong)lhs._v * rhs._v % op.Mod));
[MethodImpl(256)]
public static StaticModInt<T> operator /(StaticModInt<T> lhs, StaticModInt<T> rhs) => lhs * rhs.Inv();
[MethodImpl(256)]
public static StaticModInt<T> operator +(StaticModInt<T> v) => v;
[MethodImpl(256)]
public static StaticModInt<T> operator -(StaticModInt<T> v) => new StaticModInt<T>(v._v == 0 ? 0 : op.Mod - v._v);
[MethodImpl(256)]
public static bool operator ==(StaticModInt<T> lhs, StaticModInt<T> rhs) => lhs._v == rhs._v;
[MethodImpl(256)]
public static bool operator !=(StaticModInt<T> lhs, StaticModInt<T> rhs) => lhs._v != rhs._v;
[MethodImpl(256)]
public static implicit operator StaticModInt<T>(int v) => new StaticModInt<T>(v);
[MethodImpl(256)]
public static implicit operator StaticModInt<T>(uint v) => new StaticModInt<T>((long)v);
[MethodImpl(256)]
public static implicit operator StaticModInt<T>(long v) => new StaticModInt<T>(v);
[MethodImpl(256)]
public static implicit operator StaticModInt<T>(ulong v) => new StaticModInt<T>(v);
[MethodImpl(256)]
public static implicit operator long(StaticModInt<T> v) => v._v;
[MethodImpl(256)]
public static implicit operator ulong(StaticModInt<T> v) => v._v;
[MethodImpl(256)]
public StaticModInt<T> Pow(long n)
{
var x = this;
var r = new StaticModInt<T>(1U);
while (n > 0)
{
if ((n & 1) > 0) r *= x;
x *= x;
n >>= 1;
}
return r;
}
[MethodImpl(256)]
public StaticModInt<T> Inv()
{
var (x, y, g) = ExtGcd(_v, op.Mod);
return new StaticModInt<T>(x);
}
[MethodImpl(256)]
static (long x, long y, long g) ExtGcd(long a, long b)
{
if (b == 0) return a >= 0 ? (1, 0, a) : (-1, 0, -a);
long c = SafeMod(a, b);
var (x2, y2, g) = ExtGcd(b, c);
long x = SafeMod(y2, b);
long y = (g - a * x) / b;
return (x, y, g);
}
[MethodImpl(256)]
static long SafeMod(long x, long m)
{
long r = x % m;
if (r < 0) r += m;
return r;
}
[MethodImpl(256)]
public override string ToString() => _v.ToString();
[MethodImpl(256)]
public string ToString(string format, IFormatProvider formatProvider) => _v.ToString(format, formatProvider);
[MethodImpl(256)]
public override bool Equals(object obj) => obj is StaticModInt<T> m && Equals(m);
[MethodImpl(256)]
public bool Equals(StaticModInt<T> other) => _v == other._v;
[MethodImpl(256)]
public override int GetHashCode() => _v.GetHashCode();
}