uva-657-搜索

注意是四个方向(上下左右),不是八个方向,当成了八个方向做,一直wa

AC时间:0ms

#include<stdio.h>
#include<iostream>
#include <strstream>
#include<string>
#include<memory.h>
#include<math.h>
#include<sstream>
#include<queue>
#include<stack>
#include<vector>
using namespace std;
struct DIR
{
	int r;
	int c;
	char cc;
};
const DIR dir[] = { {-1,0},{1,0},{0,-1},{0,1}};
const int MAXR = 60;

void markX(queue<DIR> nq, queue<DIR> &q, char a[][MAXR], int r, int c,
		int used[][MAXR])
{
	DIR d;
	while (!nq.empty())
	{
		d = nq.front();
		nq.pop();
		for (int i = 0; i < 4; i++)
		{
			int nr = d.r + dir[i].r;
			int nc = d.c + dir[i].c;
			if (nr < 0 || nc < 0 || nr == r || nc == c || used[nr][nc] == 1
					|| a[nr][nc] == '.')
				continue;
			used[nr][nc] = 1;
			DIR ddd;
			ddd.r = nr;
			ddd.c = nc;
			ddd.cc = a[nr][nc];
			if (ddd.cc == '*')
			{
				q.push(ddd);
			}
			else
				nq.push(ddd);
		}
	}
}

void bfs(queue<DIR> q, char a[][MAXR], int r, int c, int used[][MAXR],
		int* total)
{
	while (!q.empty())
	{
		DIR dd = q.front();
		q.pop();
		for (int i = 0; i < 4; i++)
		{
			int nr = dd.r + dir[i].r;
			int nc = dd.c + dir[i].c;
			if (nr < 0 || nc < 0 || nr == r || nc == c || used[nr][nc] == 1
					|| a[nr][nc] == '.')
				continue;
			used[nr][nc] = 1;
			DIR ddd;
			ddd.r = nr;
			ddd.c = nc;
			ddd.cc = a[nr][nc];
			if (ddd.cc == '*')
				q.push(ddd);
			else
			{
				queue<DIR> q2;
				q2.push(ddd);
				markX(q2, q, a, r, c, used);
				if(dd.cc=='*')
				(*total)++;
			}
		}
	}
}
int main()
{
	
	int h, w;
	int tc = 0;
	while (cin >> w >> h)
	{
		tc++;
		if (h == w && h == 0)
			return 0;
		cout << "Throw " << tc << endl;
		char a[MAXR][MAXR];
		int used[MAXR][MAXR];
		memset(a, '.', sizeof(a));
		memset(used, 0, sizeof(used));
		for (int i = 0; i < h; i++)
			for (int j = 0; j < w; j++)
				cin >> a[i][j];
		int t[20];
		memset(t, 0, sizeof(t));
		int length = 0;
		queue<DIR> q1;
		for (int i = 0; i < h; i++)
			for (int j = 0; j < w; j++)
				if (used[i][j] == 0 && a[i][j] == 'X')
				{
					DIR dd;
					dd.r = i;
					dd.c = j;
					dd.cc = a[i][j];
					used[i][j] = 1;
					q1.push(dd);
					int total = 1;
					bfs(q1, a, h, w, used, &total);
					t[length++] = total;
				}
		for (int i = 0; i < length; i++)
			for (int j = 1; j < length; j++)
				if (t[j - 1] > t[j])
				{
					int k = t[j - 1];
					t[j - 1] = t[j];
					t[j] = k;
				}
		for (int i = 0; i < length; i++)
			if (i == 0)
				cout << t[i];
			else
				cout << " " << t[i];
		cout << endl<<endl;;
	}
	return 0;
}