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답안 #71703

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
71703 2018-08-25T12:28:32 Z 검수컵(#1978, imsifile) 로카히아 유적 (FXCUP3_lokahia) C++
100 / 100
 1216 ms 178240 KB 
#include "sungjin.h"

static int N, M, ba[1010][1010], chk[1010][1010], xx[4]={1,-1,0,0}, yy[4]={0,0,1,-1}; // DURL

static void dfs1(int x, int y){
	if(x<0 || y<0 || x>N+1 || y>M+1) return;
	if(chk[x][y]) return;
	chk[x][y]=-1;
	for(int i=0; i<4; i++){
		if(ba[x][y]&(1<<i)) continue;
		dfs1(x+xx[i], y+yy[i]);
	}
}

static int col;
static void dfs2(int x, int y){
	if(x<=0 || y<=0 || x>N || y>M) return;
	if(chk[x][y]) return;
	chk[x][y]=col;
	for(int i=0; i<4; i++) dfs2(x+xx[i], y+yy[i]);
}

void Init(int N_, int M_, int W, int R[], int C[], int dir[]) {
	N=N_, M=M_;
	for(int i=W; i--;){
		if(dir[i]==1) ba[R[i]][C[i]+1] |= 1<<3;
		if(dir[i]==2) ba[R[i]][C[i]-1] |= 1<<2;
		if(dir[i]==3) ba[R[i]+1][C[i]] |= 1<<1;
		if(dir[i]==4) ba[R[i]-1][C[i]] |= 1<<0;
	}
	dfs1(0,0);
	for(int i=1; i<=N; i++){
		for(int j=1; j<=M; j++){
			if(chk[i][j]) continue;
			++col; dfs2(i,j);
		}
	}
}

int WereSameTerritory(int R1, int C1, int R2, int C2) {
	if(chk[R1][C1]<0 || chk[R2][C2]<0) return 0;
	return chk[R1][C1] == chk[R2][C2];
}

#include "dowoon.h"

static int N, M, ba[1010][1010], my, no, xx[4]={1,-1,0,0}, yy[4]={0,0,1,-1};

static void dfs(int x, int y, int hx, int hy){
	if(x<=0 || y<=0 || x>N || y>M) return;
	if(ba[x][y]) return;
	if(Ask(x,y,hx,hy)) ba[x][y]=1, my++;
	else{ ba[x][y]=-1; no++; return; }

	for(int i=0; i<4; i++) dfs(x+xx[i], y+yy[i], hx, hy);
}

int Guess(int N_, int M_) {
	N=N_, M=M_;
	for(int j=1; j<M; j++){
		for(int i=1; i<=N; i++){
			if(2*no >= N*M) return 0;
			if(ba[i][j] || ba[i][j+1]) continue;
			int st=i, k, fl=0;
			for(k=st; k<=N; k++){
				if(ba[k][j] || ba[k][j+1]) break;
				int a = Ask(k,j,k,j+1);
				if(a){ fl=1; break; }
			}
			if(!fl){
				i=k-1;
				while(--k >= st) ba[k][j]=-1, no++;
				continue;
			}

			ba[k][j]=ba[k][j+1]=1; my=2;
			for(int k2=k-1; k2>=st; k2--){
				int a = Ask(k2,j,k2+1,j);
				if(a) ba[k2][j]=1, ba[k2][j+1]=-1, my++, no++;
				else{
					ba[k2][j]=-1, no++;
					while(--k2 >= st) ba[k2][j]=-1, no++;
					break;
				}
			}
			dfs(k+1, j, k, j);
			dfs(k+1, j+1, k, j);
			dfs(k, j+2, k, j);
			dfs(k-1, j+1, k, j);

			if(my*2 > N*M) return 1;
			no+=my, my=0;
			i=k-1;
		}
	}
	return 0;
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 752 KB Correct
2 Correct 6 ms 824 KB Correct
3 Correct 18 ms 1460 KB Correct
4 Correct 83 ms 16456 KB Correct
5 Correct 78 ms 16456 KB Correct
6 Correct 299 ms 68652 KB Correct
7 Correct 314 ms 96872 KB Correct
8 Correct 323 ms 142084 KB Correct
9 Correct 263 ms 176968 KB Correct

Subtask #2
87.0 / 87.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 752 KB Correct
2 Correct 6 ms 824 KB Correct
3 Correct 18 ms 1460 KB Correct
4 Correct 83 ms 16456 KB Correct
5 Correct 78 ms 16456 KB Correct
6 Correct 299 ms 68652 KB Correct
7 Correct 314 ms 96872 KB Correct
8 Correct 323 ms 142084 KB Correct
9 Correct 263 ms 176968 KB Correct
10 Correct 748 ms 176968 KB Correct
11 Correct 61 ms 176968 KB Correct
12 Correct 27 ms 176968 KB Correct
13 Correct 8 ms 176968 KB Correct
14 Correct 4 ms 176968 KB Correct
15 Correct 6 ms 176968 KB Correct
16 Correct 4 ms 176968 KB Correct
17 Correct 4 ms 176968 KB Correct
18 Correct 4 ms 176968 KB Correct
19 Correct 1216 ms 177604 KB Correct
20 Correct 7 ms 178240 KB Correct
21 Correct 5 ms 178240 KB Correct
22 Correct 5 ms 178240 KB Correct
23 Correct 6 ms 178240 KB Correct
24 Correct 22 ms 178240 KB Correct
25 Correct 11 ms 178240 KB Correct
26 Correct 26 ms 178240 KB Correct
27 Correct 75 ms 178240 KB Correct
28 Correct 60 ms 178240 KB Correct
29 Correct 78 ms 178240 KB Correct
30 Correct 95 ms 178240 KB Correct
31 Correct 326 ms 178240 KB Correct
32 Correct 302 ms 178240 KB Correct
33 Correct 350 ms 178240 KB Correct
34 Correct 354 ms 178240 KB Correct
35 Correct 372 ms 178240 KB Correct
36 Correct 368 ms 178240 KB Correct
37 Correct 334 ms 178240 KB Correct
38 Correct 355 ms 178240 KB Correct
39 Correct 254 ms 178240 KB Correct
40 Correct 251 ms 178240 KB Correct
41 Correct 316 ms 178240 KB Correct
42 Correct 358 ms 178240 KB Correct
43 Correct 428 ms 178240 KB Correct
44 Correct 165 ms 178240 KB Correct
45 Correct 137 ms 178240 KB Correct
46 Correct 351 ms 178240 KB Correct