Submission #71641

#	Time	Username	Problem	Language	Result	Execution time	Memory
71641		imsifile	Lokahian Rampart (FXCUP3_lokahia)	C++98	0 / 100	17 ms	1544 KiB

sungjin

#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];
}

dowoon

#include "dowoon.h"
#include <stdlib.h>

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

int myAsk(int r1, int c1, int r2, int c2){
	if(ba[r1][c1]<0 || ba[r2][c2]<0) return 0;
	if(!ba[r1][c1] && !ba[r2][c2]) return ba[r1][c1]==ba[r2][c2];
	return Ask(r1,c1,r2,c2);
}

void dfs(int x, int y, int hx, int hy){
	if(x<=0 || y<=0 || x>N || y>N) return;
	if(ba[x][y]) return;
	if(myAsk(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 i=N*M; i--;){
		if(2*no >= N*M) return 0;
		int r=rand()%N+1, c=rand()%(M-1)+1;
		if(myAsk(r,c,r,c+1)){
			ba[r][c]=1, my++;
			ba[r][c+1]=1, my++;
			dfs(r,c-1,r,c);
			dfs(r,c+2,r,c);
			dfs(r-1,c,r,c);
			dfs(r-1,c+1,r,c);
			dfs(r+1,c,r,c);
			dfs(r+1,c+1,r,c);
		}
		if(my*2 > N*M) return 1;
		no += my;
	}
	return 0;
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 87