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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
#310434#6398. Puzzle: Tapamemset0RE 3ms3992kbC++203.5kb2024-01-21 14:09:322024-01-21 14:09:32

Judging History

你现在查看的是最新测评结果

  • [2024-01-21 14:09:32]
  • 评测
  • 测评结果:RE
  • 用时:3ms
  • 内存:3992kb
  • [2024-01-21 14:09:32]
  • 提交

answer

#include<bits/stdc++.h>
#define all(x) begin(x),end(x)
using namespace std;
const int N=55;
int n,m,a[N][N],id[N][N],nod,pos[N*N][2];
string str;
char mp[N<<1][N<<1];
struct atom{
	int x,y;
};
void giveup(){
	cout<<"NO"<<endl;
	exit(0);
}
bool empty(){
	for(int i=0;i<n;i++)
		for(int j=0;j<m;j++)
			if(a[i][j])return false;
	return true;
}
void setup(const atom &a,const atom &b){
	// fprintf(stderr,"setup %d %d : %d %d\n",a.x,a.y,b.x,b.y);
	// assert(a.x==b.x||a.y==b.y);
	if(a.x==b.x){
		mp[a.x<<1][min(a.y,b.y)<<1|1]='.';
	}else{
		mp[min(a.x,b.x)<<1|1][a.y<<1]='.';
	}
}
bool solve_border(vector<pair<int,atom>> &b){
	for(int i=0;i<b.size();i++)
		if(b[i].first){
			if(i+1<b.size()&&b[i+1].first){
				b[i+1].first=0;
			}else{
				return false;
			}
		}
	for(int i=0;i<b.size();i++)
		if(b[i].first){
			setup(b[i].second,b[i+1].second);
		}
	return true;
}
const int M=N*N*12;
int s,e,tot,hed[N*N],to[M],val[M],nxt[M],dep[N*N],cur[N*N];
void add_edge(int u,int v){
  nxt[tot]=hed[u],to[tot]=v,val[tot]=1,hed[u]=tot++;
  nxt[tot]=hed[v],to[tot]=u,val[tot]=0,hed[v]=tot++;
}
bool bfs(){
  static int u,l,r,q[N];
  memset(dep,0,sizeof(dep)),l=r=dep[s]=1,q[1]=s;
  while(l<=r){
    u=q[l++];
    for(int i=hed[u];~i;i=nxt[i])if(val[i]&&!dep[to[i]])dep[to[i]]=dep[u]+1,q[++r]=to[i];
  }
  return dep[e];
}
int dfs(int u,int d){
  if(u==e)return d; int s=0;
  for(int &i=cur[u];~i;i=nxt[i])if(val[i]&&dep[to[i]]==dep[u]+1)
    if(int e=dfs(to[i],min(d-s,val[i]))){
      s+=e,val[i]-=e,val[i^1]+=e;
      if(s==d)return s;
    }
  return s?s:dep[u]=0;
}
int main(){
#ifdef memset0
	freopen("E.in","r",stdin);
#endif
	memset(hed,-1,sizeof(hed));
	cin.tie(0)->sync_with_stdio(0);
	cin>>n>>m;
	for(int i=0;i<n*2-1;i++){
		cin>>str;
		for(int j=0;j<m*2-1;j++)mp[i][j]=str[j]=='.'?'#':str[j];
	}
	for(int i=0;i<n;i++)
		for(int j=0;j<m;j++){
			a[i][j]=mp[i<<1][j<<1]-'0';
			a[i][j]=a[i][j]==2||a[i][j]==4||a[i][j]==7;
			// cerr<<a[i][j]<<" \n"[j+1==m];
		}
	bool fl=false;
	for(int op=0;op<4;op++){
		vector<pair<int,atom>> b;
		for(int i=0;i<n;i++)b.emplace_back(a[i][0],atom{i,0});
		for(int i=1;i<m;i++)b.emplace_back(a[n-1][i],atom{n-1,i});
		for(int i=n-2;i>=0;i--)b.emplace_back(a[i][m-1],atom{i,m-1});
		for(int i=m-2;i>=1;i--)b.emplace_back(a[0][i],atom{0,i});
		if(op&2)reverse(all(b));
		if(op&1)b.insert(b.end(),b.front()),b.erase(b.begin());
		if(solve_border(b)){
			fl=true;
			break;
		}
	}
	if(!fl)giveup();
	for(int i=0;i<n;i++)a[i][0]=a[i][m-1]=0;
	for(int i=0;i<m;i++)a[0][i]=a[n-1][i]=0;
	s=++nod,e=++nod;
	int cnt=0;
	for(int i=1;i<n-1;i++)
		for(int j=1;j<m-1;j++)
			if(a[i][j]){
				++cnt;
				id[i][j]=++nod;
				pos[nod][0]=i;
				pos[nod][1]=j;
				if((i+j)%2==0){
					add_edge(s,id[i][j]);
				}else{
					add_edge(id[i][j],e);
				}
			}
	for(int i=1;i<n-1;i++)
		for(int j=1;j<m-1;j++)
			if(a[i][j]&&(i+j)%2==0){
				if(a[i-1][j])add_edge(id[i][j],id[i-1][j]);
				if(a[i+1][j])add_edge(id[i][j],id[i+1][j]);
				if(a[i][j-1])add_edge(id[i][j],id[i][j-1]);
				if(a[i][j+1])add_edge(id[i][j],id[i][j+1]);
			}
  while(bfs()){
    memcpy(cur+1,hed+1,nod<<2);
    cnt-=dfs(s,1)*2;
  }
	if(cnt!=0){
		giveup();
	}
	for(int i=0;i<tot;i+=2)
		if(val[i]==0&&val[i^1]==1){
			int u=to[i^1],v=to[i];
			if(u!=s&&v!=e){
				setup({pos[u][0],pos[u][1]},{pos[v][0],pos[v][1]});
			}
		}
	cout<<"YES"<<endl;
	for(int i=0;i<n*2-1;i++){
		for(int j=0;j<m*2-1;j++)cout<<mp[i][j];
		cout<<endl;
	}
}

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3636kb

input:

3 3
2.4.3
.....
5.8.5
.....
3.5.3

output:

YES
2.4#3
#####
5#8#5
#####
3#5#3

result:

ok Correct.

Test #2:

score: 0
Accepted
time: 0ms
memory: 3560kb

input:

3 3
3.4.3
.....
5.7.5
.....
3.5.3

output:

NO

result:

ok Correct.

Test #3:

score: 0
Accepted
time: 0ms
memory: 3536kb

input:

2 2
2.2
...
2.2

output:

YES
2#2
.#.
2#2

result:

ok Correct.

Test #4:

score: 0
Accepted
time: 1ms
memory: 3880kb

input:

2 50
2.4.4.4.4.5.5.5.5.5.5.5.5.4.5.5.4.4.5.5.5.5.4.5.5.5.5.5.4.4.5.4.5.5.5.5.5.5.5.5.5.5.5.4.4.5.5.4.5.3
...................................................................................................
2.5.5.4.4.5.5.5.4.4.5.5.5.4.5.5.5.5.5.5.5.5.4.4.4.5.5.5.5.5.5.4.4.4.5.5.5.5.5.5.5.4.4.5.5.5.5.4...

output:

NO

result:

ok Correct.

Test #5:

score: 0
Accepted
time: 1ms
memory: 3664kb

input:

2 50
2.4.4.5.5.5.5.5.5.5.5.5.4.4.5.5.5.5.4.4.5.5.4.4.5.5.5.4.5.4.4.4.5.4.4.5.4.4.5.5.5.5.4.4.5.5.5.5.5.2
...................................................................................................
3.5.4.5.5.5.5.5.5.5.5.5.5.5.4.5.5.5.5.4.5.5.5.5.4.4.5.4.5.4.5.5.5.5.5.4.4.5.5.5.4.4.5.5.5.5.5.4...

output:

NO

result:

ok Correct.

Test #6:

score: 0
Accepted
time: 0ms
memory: 3652kb

input:

50 2
3.2
...
5.4
...
5.5
...
4.4
...
5.5
...
5.5
...
5.5
...
5.5
...
5.5
...
5.5
...
5.5
...
5.4
...
5.4
...
5.5
...
5.5
...
5.5
...
5.5
...
5.5
...
5.4
...
5.4
...
5.4
...
5.4
...
4.4
...
5.5
...
5.5
...
4.4
...
5.4
...
5.4
...
5.5
...
4.5
...
4.5
...
5.5
...
5.5
...
5.5
...
5.5
...
5.5
...
5.5
......

output:

NO

result:

ok Correct.

Test #7:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

50 2
3.3
...
5.4
...
5.4
...
5.4
...
5.4
...
5.5
...
4.4
...
4.4
...
5.5
...
4.4
...
5.5
...
5.5
...
5.5
...
5.5
...
4.5
...
5.5
...
5.5
...
5.4
...
5.4
...
5.5
...
5.4
...
5.5
...
5.4
...
5.4
...
5.5
...
5.5
...
4.5
...
4.5
...
4.5
...
4.5
...
5.5
...
5.4
...
5.4
...
5.5
...
5.5
...
4.4
...
4.4
......

output:

NO

result:

ok Correct.

Test #8:

score: 0
Accepted
time: 1ms
memory: 3552kb

input:

3 50
3.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.4.4.5.5.5.5.4.4.5.5.5.5.5.5.5.5.4.4.5.5.4.4.5.4.4.5.3
...................................................................................................
4.8.8.8.8.8.8.8.8.8.8.8.8.8.8.7.7.7.7.7.7.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.7.7.8...

output:

YES
3#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#4.4#5#5#5#5#4.4#5#5#5#5#5#5#5#5#4.4#5#5#4.4#5#4.4#5#3
###################################################################################################
4#8#8#8#8#8#8#8#8#8#8#8#8#8#8#7.7#7.7#7.7#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#8#7.7#8#...

result:

ok Correct.

Test #9:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

3 50
2.4.4.4.5.4.4.4.4.4.4.5.5.4.4.5.5.4.4.5.5.5.4.4.5.5.5.4.4.5.5.4.4.4.4.5.5.5.5.5.5.4.4.5.5.5.5.4.4.3
...................................................................................................
5.7.7.8.7.7.7.7.8.8.8.8.7.7.8.7.7.8.8.8.8.7.7.8.8.8.7.7.8.7.7.8.8.8.8.7.7.8.8.7.7.8.8.8.7.7.8.8...

output:

YES
2.4#4.4#5#4.4#4.4#4.4#5#5#4.4#5#5#4.4#5#5#5#4.4#5#5#5#4.4#5#5#4.4#4.4#5#5#5#5#5#5#4.4#5#5#5#5#4.4#3
###################################################################################################
5#7.7#8#7.7#7.7#8#8#8#8#7.7#8#7.7#8#8#8#8#7.7#8#8#8#7.7#8#7.7#8#8#8#8#7.7#8#8#7.7#8#8#8#7.7#8#8#...

result:

ok Correct.

Test #10:

score: 0
Accepted
time: 1ms
memory: 3748kb

input:

50 3
3.5.3
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
5.8.4
.....
5.8.4
.....
4.8.5
.....
4.7.5
.....
5.7.5
.....
5.8.5
.....
5.8.4
.....
5.8.4
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
4.8.5
.....
4.7.5
.....
5.7.5
.....
5.8.5
.....
5.8.5
.....
5.8.5
....

output:

YES
3#5#3
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
5#8#4
####.
5#8#4
#####
4#8#5
.####
4#7#5
##.##
5#7#5
#####
5#8#5
#####
5#8#4
####.
5#8#4
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
4#8#5
.####
4#7#5
##.##
5#7#5
#####
5#8#5
#####
5#8#5
#####
5#8#5
##...

result:

ok Correct.

Test #11:

score: 0
Accepted
time: 1ms
memory: 3760kb

input:

50 3
2.4.3
.....
4.8.5
.....
4.8.5
.....
5.8.5
.....
4.7.4
.....
4.7.4
.....
4.8.5
.....
4.8.4
.....
5.8.4
.....
4.7.5
.....
4.7.5
.....
5.8.5
.....
5.8.5
.....
5.8.4
.....
5.8.4
.....
5.8.5
.....
5.8.5
.....
5.7.5
.....
5.7.5
.....
5.8.5
.....
5.8.5
.....
5.8.5
.....
4.8.5
.....
4.7.5
.....
4.7.4
....

output:

YES
2.4#3
#####
4#8#5
.####
4#8#5
#####
5#8#5
#####
4#7#4
.#.#.
4#7#4
#####
4#8#5
.####
4#8#4
####.
5#8#4
#####
4#7#5
.#.##
4#7#5
#####
5#8#5
#####
5#8#5
#####
5#8#4
####.
5#8#4
#####
5#8#5
#####
5#8#5
#####
5#7#5
##.##
5#7#5
#####
5#8#5
#####
5#8#5
#####
5#8#5
#####
4#8#5
.####
4#7#5
##.##
4#7#4
.#...

result:

ok Correct.

Test #12:

score: 0
Accepted
time: 0ms
memory: 3592kb

input:

10 10
2.4.4.4.5.5.4.4.5.2
...................
5.7.8.8.7.8.7.7.8.4
...................
4.7.8.8.7.8.8.8.8.5
...................
4.8.8.8.7.7.8.8.8.4
...................
5.8.7.7.7.7.8.8.7.4
...................
4.7.7.8.8.8.8.8.7.4
...................
4.8.7.8.8.7.7.7.8.4
...................
5.8.7.8.8.7.8....

output:

YES
2.4#4.4#5#5#4.4#5#2
##################.
5#7#8#8#7#8#7.7#8#4
##.#####.##########
4#7#8#8#7#8#8#8#8#5
.##################
4#8#8#8#7.7#8#8#8#4
##################.
5#8#7.7#7.7#8#8#7#4
################.##
4#7.7#8#8#8#8#8#7#4
.#################.
4#8#7#8#8#7#7.7#8#4
####.#####.########
5#8#7#8#8#7#8#8#...

result:

ok Correct.

Test #13:

score: 0
Accepted
time: 1ms
memory: 3848kb

input:

10 10
3.5.5.5.5.5.5.4.4.3
...................
5.7.7.8.8.7.8.7.7.4
...................
5.8.8.7.7.7.7.7.8.4
...................
5.8.7.7.8.8.8.7.7.5
...................
5.8.8.7.7.7.7.7.7.5
...................
4.7.7.8.8.7.8.8.7.4
...................
4.7.7.7.7.7.7.8.7.4
...................
5.8.7.8.7.7.7....

output:

NO

result:

ok Correct.

Test #14:

score: 0
Accepted
time: 1ms
memory: 3724kb

input:

10 10
2.4.5.4.4.5.5.5.5.3
...................
4.8.7.7.8.8.8.7.8.4
...................
4.8.7.8.7.8.8.7.8.4
...................
5.7.7.8.7.7.7.8.7.5
...................
5.7.8.8.8.8.8.8.7.5
...................
4.7.8.7.7.7.8.8.8.5
...................
4.7.7.7.8.7.7.8.8.5
...................
4.7.8.7.8.8.7....

output:

YES
2.4#5#4.4#5#5#5#5#3
###################
4#8#7.7#8#8#8#7#8#4
.#############.###.
4#8#7#8#7#8#8#7#8#4
####.###.##########
5#7#7#8#7#7.7#8#7#5
##.#############.##
5#7#8#8#8#8#8#8#7#5
###################
4#7#8#7.7#7#8#8#8#5
.#.#######.########
4#7#7.7#8#7#7#8#8#5
############.######
4#7#8#7#8#8#7#8#...

result:

ok Correct.

Test #15:

score: 0
Accepted
time: 1ms
memory: 3544kb

input:

10 10
2.4.4.4.5.5.4.4.5.3
...................
5.7.8.8.7.7.7.7.7.5
...................
5.7.7.7.8.7.7.8.7.5
...................
4.8.7.7.8.8.8.7.8.4
...................
4.8.8.8.7.8.8.7.8.4
...................
4.8.8.8.7.8.8.8.8.5
...................
4.8.7.8.7.7.7.8.8.4
...................
5.8.7.8.7.8.8....

output:

YES
2.4#4.4#5#5#4.4#5#3
###################
5#7#8#8#7.7#7.7#7#5
##.#############.##
5#7#7.7#8#7.7#8#7#5
###################
4#8#7.7#8#8#8#7#8#4
.#############.###.
4#8#8#8#7#8#8#7#8#4
########.##########
4#8#8#8#7#8#8#8#8#5
.##################
4#8#7#8#7#7.7#8#8#4
####.###.#########.
5#8#7#8#7#8#8#8#...

result:

ok Correct.

Test #16:

score: 0
Accepted
time: 0ms
memory: 3652kb

input:

10 10
3.5.4.4.5.5.4.4.5.3
...................
5.7.8.8.7.8.8.8.8.5
...................
5.7.8.8.7.7.7.8.8.5
...................
5.8.7.7.8.8.7.8.8.5
...................
5.8.8.8.8.8.7.8.8.4
...................
5.7.7.8.8.7.8.7.8.4
...................
5.7.8.8.8.7.7.7.8.5
...................
5.7.8.8.8.8.7....

output:

YES
3#5#4.4#5#5#4.4#5#3
###################
5#7#8#8#7#8#8#8#8#5
##.#####.##########
5#7#8#8#7#7.7#8#8#5
###################
5#8#7.7#8#8#7#8#8#5
############.######
5#8#8#8#8#8#7#8#8#4
##################.
5#7.7#8#8#7#8#7#8#4
##########.###.####
5#7#8#8#8#7#7#7#8#5
##.#########.######
5#7#8#8#8#8#7#8#...

result:

ok Correct.

Test #17:

score: 0
Accepted
time: 1ms
memory: 3728kb

input:

10 10
3.5.5.4.4.5.5.4.4.3
...................
5.7.7.7.7.8.8.7.7.5
...................
5.8.7.7.8.8.8.8.8.5
...................
5.7.8.8.8.7.7.8.8.4
...................
5.7.7.7.8.7.7.8.7.4
...................
5.8.8.8.7.7.8.8.7.5
...................
4.7.7.8.8.8.7.7.8.5
...................
4.8.8.8.7.7.8....

output:

YES
3#5#5#4.4#5#5#4.4#3
###################
5#7.7#7.7#8#8#7.7#5
###################
5#8#7.7#8#8#8#8#8#5
###################
5#7#8#8#8#7.7#8#8#4
##.###############.
5#7#7.7#8#7.7#8#7#4
################.##
5#8#8#8#7.7#8#8#7#5
###################
4#7.7#8#8#8#7.7#8#5
.##################
4#8#8#8#7.7#8#7#...

result:

ok Correct.

Test #18:

score: 0
Accepted
time: 0ms
memory: 3912kb

input:

10 10
2.4.4.5.4.4.4.4.4.2
...................
4.8.7.8.8.7.8.8.8.4
...................
4.8.7.8.7.7.7.7.7.4
...................
4.7.7.8.7.8.7.7.7.4
...................
5.8.7.8.7.7.8.8.8.4
...................
4.8.7.8.7.7.7.7.7.5
...................
4.8.7.7.8.8.7.7.7.5
...................
4.7.7.8.8.7.8....

output:

YES
2#4.4#5#4.4#4.4#4.2
.##################
4#8#7#8#8#7#8#8#8#4
####.#####.#######.
4#8#7#8#7#7#7#7.7#4
.#######.###.######
4#7.7#8#7#8#7#7.7#4
##################.
5#8#7#8#7.7#8#8#8#4
####.##############
4#8#7#8#7.7#7#7.7#5
.###########.######
4#8#7.7#8#8#7#7.7#5
###################
4#7.7#8#8#7#8#8#...

result:

ok Correct.

Test #19:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

10 10
2.4.4.4.4.4.4.4.4.2
...................
4.8.8.7.7.7.7.8.8.5
...................
4.7.8.7.8.8.7.8.7.4
...................
4.7.8.7.7.8.7.7.7.4
...................
4.8.7.8.7.7.7.7.8.4
...................
4.8.7.8.7.7.7.7.7.4
...................
4.7.8.7.8.7.7.7.7.4
...................
4.7.7.7.7.7.7....

output:

YES
2.4#4.4#4.4#4.4#4.2
###################
4#8#8#7#7.7#7#8#8#5
.#####.#####.######
4#7#8#7#8#8#7#8#7#4
##.#############.#.
4#7#8#7.7#8#7.7#7#4
.##################
4#8#7#8#7.7#7.7#8#4
####.#############.
4#8#7#8#7.7#7#7.7#4
.###########.######
4#7#8#7#8#7#7#7.7#4
##.###.###.#######.
4#7#7#7#7#7#7.7#...

result:

ok Correct.

Test #20:

score: 0
Accepted
time: 1ms
memory: 3780kb

input:

50 50
3.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.4.4.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.3
...................................................................................................
5.8.8.8.8.7.7.8.8.8.8.8.7.7.8.8.8.7.7.7.8.8.8.8.8.8.8.8.8.8.8.7.8.8.8.7.7.8.8.8.8.8.8.8.8.7.8....

output:

YES
3#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#4.4#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#5#3
###################################################################################################
5#8#8#8#8#7.7#8#8#8#8#8#7.7#8#8#8#7#7.7#8#8#8#8#8#8#8#8#8#8#8#7#8#8#8#7.7#8#8#8#8#8#8#8#8#7#8#7....

result:

ok Correct.

Test #21:

score: 0
Accepted
time: 1ms
memory: 3776kb

input:

50 50
3.5.5.5.4.4.5.5.5.5.5.5.5.5.5.5.5.5.4.4.5.4.4.4.4.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.3
...................................................................................................
4.8.8.8.8.8.8.7.7.8.8.8.8.8.8.8.8.8.7.7.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8.8....

output:

NO

result:

ok Correct.

Test #22:

score: 0
Accepted
time: 3ms
memory: 3992kb

input:

50 50
3.5.4.4.5.5.5.5.4.4.5.4.4.5.5.4.4.5.5.5.5.5.5.4.4.5.5.5.5.5.5.4.4.5.5.4.4.5.5.5.5.5.5.5.5.5.5.5.5.3
...................................................................................................
5.7.7.8.8.8.7.7.7.8.8.8.8.8.7.8.8.8.8.8.8.8.8.8.8.7.7.8.8.7.7.8.8.8.8.8.8.8.8.8.7.7.8.8.8.8.7....

output:

YES
3#5#4.4#5#5#5#5#4.4#5#4.4#5#5#4.4#5#5#5#5#5#5#4.4#5#5#5#5#5#5#4.4#5#5#4.4#5#5#5#5#5#5#5#5#5#5#5#5#3
###################################################################################################
5#7.7#8#8#8#7#7.7#8#8#8#8#8#7#8#8#8#8#8#8#8#8#8#8#7.7#8#8#7.7#8#8#8#8#8#8#8#8#8#7.7#8#8#8#8#7#8#...

result:

ok Correct.

Test #23:

score: 0
Accepted
time: 1ms
memory: 3628kb

input:

50 50
3.5.4.4.5.4.4.5.5.5.5.5.5.5.5.5.5.4.4.5.5.4.4.4.4.5.5.4.4.5.4.4.5.5.5.4.5.5.5.4.4.5.5.4.4.5.5.5.4.2
...................................................................................................
4.7.8.8.8.7.7.8.7.7.8.8.7.8.8.8.8.7.7.8.8.8.8.8.7.8.8.8.8.8.8.8.8.8.8.8.8.8.7.8.8.8.8.8.7.8.8....

output:

NO

result:

ok Correct.

Test #24:

score: -100
Runtime Error

input:

50 50
2.4.5.4.4.5.4.4.5.5.5.4.4.4.4.5.5.5.5.4.4.5.5.5.4.4.5.4.4.5.4.4.5.4.4.5.4.4.5.4.4.5.4.4.5.5.5.5.5.3
...................................................................................................
5.8.8.8.8.7.8.8.8.8.8.8.8.8.7.7.8.8.8.8.8.8.7.7.7.8.8.8.8.7.7.8.8.8.7.8.8.8.7.7.8.8.8.8.7.7.8....

output:


result: