結果

問題 No.5006 Hidden Maze
ユーザー 👑 p-adic
提出日時 2022-08-20 11:42:38
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
AC  
実行時間 81 ms / 2,000 ms
コード長 4,271 bytes
コンパイル時間 639 ms
実行使用メモリ 22,856 KB
スコア 0
平均クエリ数 1002.00
最終ジャッジ日時 2022-08-20 11:42:56
合計ジャッジ時間 13,544 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge15
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ファイルパターン 結果
other AC * 100
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <iostream>
#include <list>
#include <vector>
#include <string>
#include <stdio.h>
#include <stdint.h>
#include <iomanip>
using namespace std;
using uint = unsigned int;
using ll = long long;
#define CIN( LL , A ) LL A; cin >> A 
#define GETLINE( A ) string A; getline( cin , A ) 
#define GETLINE_SEPARATE( A , SEPARATOR ) string A; getline( cin , A , SEPARATOR ) 
#define FOR_LL( VAR , INITIAL , FINAL_PLUS_ONE ) for( ll VAR = INITIAL ; VAR < FINAL_PLUS_ONE ; VAR ++ ) 
#define FOR_ITR( ARRAY , ITR , END ) for( auto ITR = ARRAY .begin() , END = ARRAY .end() ; ITR != END ; ITR ++ ) 
#define REPEAT( HOW_MANY_TIMES ) FOR_LL( VARIABLE_FOR_REPEAT , 0 , HOW_MANY_TIMES ) 
#define RETURN( ANSWER ) cout << ( ANSWER ) << endl; return 0 
#define DOUBLE( PRECISION , ANSWER ) cout << fixed << setprecision( PRECISION ) << ( ANSWER ) << endl; return 0 
#define MIN( A , B ) A < B ? A : B;
#define MAX( A , B ) A < B ? B : A;
template <typename T> inline T Distance( const T& a , const T& b ){ return a < b ? b - a : a - b; }
#define H 20 
#define W 20 
#define H_minus 19 
#define W_minus 19 
#define T 1001 
#define K 401 
int main()
{
  constexpr const ll D = 0;
  constexpr const ll R = 1;
  constexpr const ll U = 2;
  constexpr const ll L = 3;
  const string direction[4] = { "D" , "R" , "U" , "L" };
  CIN( ll , H_dummy );
  CIN( ll , W_dummy );
  CIN( ll , p );
  bool wall[H][W][4] = {};
  FOR_LL( i , 0 , H ){
    wall[i][0][L] = true;
    wall[i][W-1][R] = true;
  }
  FOR_LL( j , 0 , W ){
    wall[0][j][U] = true;
    wall[H-1][j][D] = true;
  }
  ll fixed_length = 0;
  ll strategy[K] = {};
  ll coord_x[K] = {};
  ll coord_y[K] = {};
  FOR_LL( t , 0 , T ){
    FOR_LL( k , fixed_length + 1 , K ){
      const ll& x = coord_x[k];
      const ll& y = coord_y[k];
      bool (&w)[4] = wall[y][x];
      bool searching = true;
      const ll& s_k_prev = strategy[k-1];
      ll& s_k = strategy[k];
      s_k = ( s_k_prev + 3 ) % 4;
      for( ll d = 0 ; d < 4 && searching ; d++ ){
    if( ! w[s_k] ){
      searching = false;
    } else {
      s_k = ( s_k + 1 ) % 4;
    }
      }
      if( searching ){
    for( ll d = 0 ; d < 4 ; d++ ){
      w[d] = ( x == 0 && d == L ) || ( x == W_minus && d == R ) || ( y == 0 && d == U ) || ( y == H_minus && d == D );
      if( x > 0 ){
        wall[y][x-1][R] = true;
      }
      if( x < H_minus ){
        wall[y][x+1][L] = true;
      }
      if( y > 0 ){
        wall[y-1][x][D] = true;
      }
      if( y < W_minus ){
        wall[y+1][x][W] = true;
      }
    }
    s_k = ( s_k_prev + 3 ) % 4;
    for( ll d = 0 ; d < 4 && searching ; d++ ){
      if( ! w[s_k] ){
        searching = false;
      } else {
        s_k = ( s_k + 1 ) % 4;
      }
    }
      }
      coord_x[k+1] = x + ( s_k == L ? -1 : s_k == R ? 1 : 0 );
      coord_y[k+1] = y + ( s_k == U ? -1 : s_k == D ? 1 : 0 );
    }
    FOR_LL( k , 1 , K ){
      cout << direction[strategy[k]];
    }
    cout << endl;
    CIN( ll , length );
    if( length == -1 ){
      RETURN( 0 );
    }
    length++;
    if( fixed_length < length ){
      fixed_length = length;
      if( fixed_length < K ){
    const ll& x = coord_x[fixed_length];
    const ll& y = coord_y[fixed_length];
    const ll& s_fixed_length = strategy[fixed_length];
    wall[y][x][s_fixed_length] = true;
    if( s_fixed_length == D || y < H_minus ){
      wall[y+1][x][U] = true;
    }
    if( s_fixed_length == R || x < W_minus ){
      wall[y][x+1][L] = true;
    }
    if( s_fixed_length == U || y > 0 ){
      wall[y-1][x][D] = true;
    }
    if( s_fixed_length == L || x > 0 ){
      wall[y][x-1][R] = true;
    }
      }
      ll K0 = fixed_length + 1;
      FOR_LL( k , 1 , K0 ){
    const ll& x = coord_x[k];
    const ll& y = coord_y[k];
    FOR_LL( m , k + 1 , K0 ){
      if( coord_x[m] == x && coord_y[m] == y ){
        const ll& s_k = strategy[k];
        wall[y][x][s_k] = true;
        if( s_k == D || y < H_minus ){
          wall[y+1][x][U] = true;
        }
        if( s_k == R || x < W_minus ){
          wall[y][x+1][L] = true;
        }
        if( s_k == U || y > 0 ){
          wall[y-1][x][D] = true;
        }
        if( s_k == L || x > 0 ){
          wall[y][x-1][R] = true;
        }
        ll d = m - k;
        FOR_LL( n , k + 1 , K0 ){
          strategy[n] = strategy[n + d];
          coord_x[n] = coord_x[n + d];
          coord_y[n] = coord_y[n + d];
        }
        fixed_length -= d;
        K0 -= d;
      }
    }
      }
    }
  }
  return 0;
}
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