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  • adv虫洞

    3
    5
    0 0 9 9
    0 3 6 9 6
    0 0 1 2 1
    1 3 6 2 2
    3 0 9 8 4
    6 4 8 8 3
    2
    3 4 9 20
    1 2 7 10 3
    6 6 10 18 3
    3
    0 0 5 6
    3 4 1 2 1
    7 8 4 5 3
    2 0 5 4 2
    #include<stdio.h>
    #include<stdlib.h>
    int d;
    int cdz[5][5];
    int sx,sy;
    int ex,ey;
    int ip[5] = {0,1,2,3,4};
    int op[5];
    int min;
    int D = 0;
    void DFS(int step,int n,int x,int y);
    bool issafe(int step,int v);
    int main()
    {
    	int n;
    	int temp;
    	freopen("a.txt","r",stdin);
    	scanf("%d",&n);
    	for(int i = 0;i < n;i++)
    	{
    		scanf("%d",&d);
    		scanf("%d",&sx);
    		scanf("%d",&sy);
    		scanf("%d",&ex);
    		scanf("%d",&ey);
    		int dx = sx - ex > 0 ? sx - ex : ex - sx;
    		int dy = sy - ey > 0 ? sy - ey : ey - sy;
    		min = dx + dy;
    		temp = min;
    		for(int p = 0;p < d;p++)
    		{
    			for(int q = 0;q < 5;q++)
    			{
    				scanf("%d",&cdz[p][q]);
    			}
    		}
    		for(int j = 1;j <= d;j++)
    		{
    			DFS(0,j,sx,sy);
    		}
    		printf("%d
    ",min);
    		min = temp;
    		for(int f = 0;f < 5;f++)
    		{
    			op[f] = 0;
    			for(int j = 0;j < 5;j++)
    			{
    				cdz[f][j] = 0;
    			}
    		}
    	}
    	return 0;
    }
    
    void DFS(int step,int n,int x,int y)
    {
    	if(n == step)
    	{
    		int nx = ex - x > 0 ? ex - x : x - ex;
    		int ny = ey - y > 0 ? ey - y : y - ey;
    		if(D + nx + ny < min){
    			min = D + nx + ny;
    		}
    		/*for(int k = 0;k < n;k++)
    		{
    			printf("%d",op[k]);
    		}
    		printf(" %d",D + nx + ny);
    		printf("	");*/
    
    		return;
    	}
    	for(int i = 0;i < 5;i++)
    	{
    		if(issafe(step,i))
    		{
    			op[step] = i;
    			int dx = cdz[i][2] - x > 0 ? cdz[i][2] - x : x - cdz[i][2];
    			int dy = cdz[i][3] - y > 0 ? cdz[i][3] - y : y - cdz[i][3];
    			D += dx + dy + cdz[i][4];
    			DFS(step + 1,n,cdz[i][0],cdz[i][1]);
    			D = D - dx - dy - cdz[i][4]; //D退
    			
    			int gx = cdz[i][0] - x > 0 ? cdz[i][0] - x : x - cdz[i][0];
    			int gy = cdz[i][1] - y > 0 ? cdz[i][1] - y : y - cdz[i][1];
    			D += gx + gy + cdz[i][4];
    			DFS(step + 1,n,cdz[i][2],cdz[i][3]);
    			D = D - gx - gy - cdz[i][4];
    
    			op[step] = 0;
    		}
    	}
    
    }
    bool issafe(int step,int v)
    {
    	bool ret = true; 
    	for(int i = 0;i < step;i++)
    	{
    		if(v == op[i])
    		{
    			ret = false;
    		}
    	}
    	return ret;
    }
    
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  • 原文地址:https://www.cnblogs.com/452035305qq/p/6264197.html
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