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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#350031#6723. Grid with Arrowswudibaolong#WA 0ms3668kbC++142.0kb2024-03-10 12:54:372024-03-10 12:54:37

Judging History

你现在查看的是最新测评结果

  • [2024-03-10 12:54:37]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:3668kb
  • [2024-03-10 12:54:37]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=1e5+10;
#define endl '\n'
int du[N];
char arrow[N];
int st[N];
int n,m;
int find_set(int x)
{
	if(st[x] != x) st[x] = find_set(st[x]);
	return st[x];
}
void union_set(int a,int b)
{
	int fa=find_set(a),fb=find_set(b);
	st[fa] = fb;	
}
bool check(int x,int y)
{
	if(x <0 || x>=n) return 0;
	if(y <0 || y>=m) return 0;
	return 1;
}

int main()
{
	int T;
	cin>>T;
	while(T--)
	{
		scanf("%d %d",&n,&m);
		
		for(int i=0;i<n*m;i++) st[i]=i;
		
		for(int i=0;i<n;i++)
		{
			for(int j=0;j<m;j++)
			{
				char ch;
				scanf(" %c",&ch);
				arrow[i*m+j]=ch;
			}
		}
		
		for(int i=0;i<n;i++)
		{
			for(int j=0;j<m;j++)
			{
				int val;
				scanf("%d",&val);
			
				if(arrow[i*m+j] == 'u')  
				{
					int num=(i-val)*m +j; 
					int x=i-val,y=j;
					if(!check(x,y)) continue; 
					
					du[i*m+j]++;
					//du[num]--;
					union_set(i*m+j,num);
				}
				else if(arrow[i*m+j] == 'd')  
				{
					int num=(i+val)*m +j; 
					int x=i+val,y=j;
					if(!check(x,y)) continue;
					
					du[i*m+j]++;
					//du[num]--;
					union_set(i*m+j,num);
				}
				else if(arrow[i*m+j] == 'l')  
				{
					int num=i*m +j-val; 
					int x=i,y=j-val;
					if(!check(x,y)) continue;
					
					du[i*m+j]++;
					//du[num]--;
					union_set(i*m+j,num);
				}
				else if(arrow[i*m+j] == 'r')  
				{
					int num=i*m +j+val; 
					int x=i,y=j+val; 
					if(!check(x,y)) continue;
					
					du[i*m+j]++;
					//du[num]--;
					union_set(i*m+j,num);
				}
			}
		}
		
		bool flag=1;
		int root=find_set(0);
		int cnt_1 = 0, cnt1 = 0;
		int cnt0;
		for(int i=0;i<n*m;i++) 
		{
		
			if(find_set(i) != root) flag=0;
			
			if(du[i] == 0) cnt0++;
			if(du[i] == -1) cnt_1++;
			else if(du[i] == 1) cnt1++;
			else if(du[i] !=0) flag=0;
		
		}
		//cout<<endl;

		if(!flag)
		{
			cout<<"No"<<endl;
			continue;
		}
		
		
		if(cnt0 < 2 )
			cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
	
	
 } 

詳細信息

Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 3668kb

input:

2
2 3
rdd
url
2 1 1
1 1 2
2 2
rr
rr
1 1
1 1

output:

No
No

result:

wrong answer expected YES, found NO [1st token]