結果

問題 No.5006 Hidden Maze
ユーザー 👑 platinumplatinum
提出日時 2023-04-25 15:12:25
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 84 ms / 2,000 ms
コード長 2,994 bytes
コンパイル時間 2,341 ms
コンパイル使用メモリ 207,136 KB
実行使用メモリ 24,372 KB
スコア 77,894
平均クエリ数 222.06
最終ジャッジ日時 2023-04-25 15:12:39
合計ジャッジ時間 11,957 ms
ジャッジサーバーID
(参考情報)
judge13 / judge12
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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 35 ms
24,096 KB
testcase_01 AC 29 ms
23,700 KB
testcase_02 AC 29 ms
23,664 KB
testcase_03 AC 30 ms
24,360 KB
testcase_04 AC 27 ms
23,304 KB
testcase_05 AC 39 ms
23,868 KB
testcase_06 AC 32 ms
23,544 KB
testcase_07 AC 60 ms
23,556 KB
testcase_08 AC 45 ms
23,868 KB
testcase_09 AC 71 ms
23,352 KB
testcase_10 AC 31 ms
23,916 KB
testcase_11 AC 27 ms
23,772 KB
testcase_12 AC 32 ms
23,952 KB
testcase_13 AC 30 ms
24,228 KB
testcase_14 AC 36 ms
23,652 KB
testcase_15 AC 25 ms
23,568 KB
testcase_16 AC 29 ms
23,352 KB
testcase_17 AC 38 ms
24,048 KB
testcase_18 AC 48 ms
24,132 KB
testcase_19 AC 32 ms
23,568 KB
testcase_20 AC 26 ms
23,412 KB
testcase_21 AC 27 ms
23,400 KB
testcase_22 AC 29 ms
23,964 KB
testcase_23 AC 38 ms
23,916 KB
testcase_24 AC 34 ms
24,228 KB
testcase_25 AC 34 ms
23,340 KB
testcase_26 AC 78 ms
23,916 KB
testcase_27 AC 32 ms
23,964 KB
testcase_28 AC 36 ms
23,292 KB
testcase_29 AC 81 ms
23,340 KB
testcase_30 AC 28 ms
24,204 KB
testcase_31 AC 27 ms
24,048 KB
testcase_32 AC 30 ms
23,964 KB
testcase_33 AC 34 ms
24,228 KB
testcase_34 AC 31 ms
24,144 KB
testcase_35 AC 47 ms
23,964 KB
testcase_36 AC 38 ms
23,340 KB
testcase_37 AC 63 ms
24,348 KB
testcase_38 AC 42 ms
23,424 KB
testcase_39 AC 43 ms
23,952 KB
testcase_40 AC 29 ms
23,340 KB
testcase_41 AC 29 ms
23,460 KB
testcase_42 AC 32 ms
24,144 KB
testcase_43 AC 31 ms
23,460 KB
testcase_44 AC 28 ms
23,568 KB
testcase_45 AC 34 ms
23,556 KB
testcase_46 AC 74 ms
24,084 KB
testcase_47 AC 32 ms
23,928 KB
testcase_48 AC 81 ms
24,216 KB
testcase_49 AC 83 ms
24,048 KB
testcase_50 AC 27 ms
23,472 KB
testcase_51 AC 28 ms
23,964 KB
testcase_52 AC 32 ms
24,348 KB
testcase_53 AC 37 ms
24,216 KB
testcase_54 AC 27 ms
23,304 KB
testcase_55 AC 26 ms
23,976 KB
testcase_56 AC 32 ms
23,412 KB
testcase_57 AC 33 ms
23,304 KB
testcase_58 AC 39 ms
23,952 KB
testcase_59 AC 28 ms
23,568 KB
testcase_60 AC 29 ms
23,412 KB
testcase_61 AC 28 ms
23,976 KB
testcase_62 AC 31 ms
23,736 KB
testcase_63 AC 29 ms
23,544 KB
testcase_64 AC 34 ms
23,304 KB
testcase_65 AC 29 ms
23,760 KB
testcase_66 AC 31 ms
24,084 KB
testcase_67 AC 53 ms
23,940 KB
testcase_68 AC 59 ms
23,760 KB
testcase_69 AC 41 ms
23,352 KB
testcase_70 AC 27 ms
24,372 KB
testcase_71 AC 26 ms
24,228 KB
testcase_72 AC 25 ms
23,652 KB
testcase_73 AC 29 ms
23,316 KB
testcase_74 AC 27 ms
23,460 KB
testcase_75 AC 34 ms
24,048 KB
testcase_76 AC 27 ms
24,204 KB
testcase_77 AC 64 ms
24,060 KB
testcase_78 AC 28 ms
23,676 KB
testcase_79 AC 82 ms
23,460 KB
testcase_80 AC 34 ms
24,252 KB
testcase_81 AC 29 ms
24,060 KB
testcase_82 AC 28 ms
23,568 KB
testcase_83 AC 26 ms
23,856 KB
testcase_84 AC 34 ms
23,916 KB
testcase_85 AC 41 ms
23,460 KB
testcase_86 AC 29 ms
24,144 KB
testcase_87 AC 35 ms
23,460 KB
testcase_88 AC 54 ms
23,760 KB
testcase_89 AC 84 ms
23,352 KB
testcase_90 AC 29 ms
23,952 KB
testcase_91 AC 31 ms
24,372 KB
testcase_92 AC 39 ms
23,688 KB
testcase_93 AC 35 ms
23,964 KB
testcase_94 AC 31 ms
23,556 KB
testcase_95 AC 44 ms
23,412 KB
testcase_96 AC 36 ms
24,072 KB
testcase_97 AC 55 ms
23,568 KB
testcase_98 AC 75 ms
23,556 KB
testcase_99 AC 66 ms
23,952 KB
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ソースコード

diff #

#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (int)(n); i++)

using namespace std;
using LL = long long;
using P = pair<int,int>;
using vv = vector<vector<int>>;
const int INF = (int)1e9;
const LL LINF = (LL)1e18;
const double eps = 1e-5;
const int min_p = 6;
const int max_p = 15;

int dy[4] = {-1, 1, 0, 0};
int dx[4] = {0, 0, -1, 1};
string dir = "UDLR";

double h[20][21], v[21][20];

int H, W, poss;
double p;

struct node{
	int y, x;
	double d;
	node(int y, int x, double d) : y(y), x(x), d(d) {}
	bool operator> (const node &u) const{
		return d > u.d;
	}
};

string dijkstra(){
	double dist[20][20];
	rep(i,20){
		rep(j,20) dist[i][j] = INF;
	}
	char par[20][20];
	dist[0][0] = 0;
	priority_queue<node,vector<node>,greater<>> pq;
	pq.emplace(0, 0, 0);
	while(!pq.empty()){
		node u = pq.top(); pq.pop();
		if(dist[u.y][u.x] < u.d) continue;
		rep(k,4){
			int ny = u.y + dy[k], nx = u.x + dx[k];
			if(ny < 0 || ny >= 20) continue;
			if(nx < 0 || nx >= 20) continue;
			double e = 0;
			if(k == 0) e = 1.0 / (1.0 - v[u.y][u.x]);
			else if(k == 1) e = 1.0 / (1.0 - v[u.y+1][u.x]);
			else if(k == 2) e = 1.0 / (1.0 - h[u.y][u.x]);
			else e = 1.0 / (1.0 - h[u.y][u.x+1]);
			double nd = u.d + e;
			if(dist[ny][nx] <= nd) continue;
			pq.emplace(ny, nx, nd);
			dist[ny][nx] = nd;
			par[ny][nx] = dir[k];
		}
	}
	int now_y = 19, now_x = 19;
	string res;
	while(now_y != 0 || now_x != 0){
		char c = par[now_y][now_x];
		res += c;
		if(c == 'U') now_y++;
		else if(c == 'D') now_y--;
		else if(c == 'L') now_x++;
		else now_x--;
	}
	reverse(res.begin(), res.end());
	return res;
}

double update(double now_p){
	if(now_p < eps) return now_p;
	double wall_p = now_p + (1.0 - now_p) * p;
	return now_p / wall_p;
}
void update_all(){
	double tot = 0.0;
	rep(i,20){
		rep(j,19){
			tot += h[i][j+1];
		}
	}
	rep(i,19){
		rep(j,20){
			tot += v[i+1][j];
		}
	}
	tot /= 150.0;
	rep(i,20){
		rep(j,19){
			h[i][j+1] /= tot;
		}
	}
	rep(i,19){
		rep(j,20){
			v[i+1][j] /= tot;
		}
	}
}

int main(){
	cin >> H >> W >> poss;
	assert(H == 20 && W == 20);
	assert(min_p <= poss && poss <= max_p);
	p = poss;
	p /= 100.0;

	rep(i,20){
		h[i][0] = 1.0;
		h[i][20] = 1.0;
	}
	rep(j,20){
		v[0][j] = 1.0;
		v[20][j] = 1.0;
	}
	rep(i,20){
		rep(j,19) h[i][j+1] = 150.0 / 760.0;
	}
	rep(i,19){
		rep(j,20) v[i+1][j] = 150.0 / 760.0;
	}

	rep(trial,1001){
		string ans = dijkstra();
		cout << ans << endl;

		int res;
		cin >> res;
		if(res == -1){
			cerr << "score = " << 1000 - trial << endl;
			break;
		}
		int y = 0, x = 0;
		int siz = ans.size();
		rep(i,res){
			char c = ans[i];
			if(c == 'U') v[y][x] = 0, y--;
			if(c == 'D') v[y+1][x] = 0, y++;
			if(c == 'L') h[y][x] = 0, x--;
			if(c == 'R') h[y][x+1] = 0, x++;
		}
		if(res < siz){
			char c = ans[res];
			if(c == 'U') v[y][x] = update(v[y][x]);
			if(c == 'D') v[y+1][x] = update(v[y+1][x]);
			if(c == 'L') h[y][x] = update(h[y][x]);
			if(c == 'R') h[y][x+1] = update(h[y][x+1]);
		}
		update_all();
	}

	return 0;
}
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