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  1. const maxn = 700;
  2. var n,m:word;
  3.     a: array[0..maxn+1,0..maxn+1] of word;
  4.     visit: array[0..maxn+1,0..maxn+1] of boolean;
  5. procedure enter;
  6. var i,j:word;
  7. begin
  8.   readln(n,m);
  9.   for i:=1 to n do
  10.   begin
  11.     for j:=1 to m do
  12.     begin
  13.       read(a[i,j]);
  14.       visit[i,j]:=false;
  15.     end;
  16.     readln;
  17.   end;
  18. end;
  19. function dfs(x,y:word):boolean;
  20. var p,pp:boolean;
  21. begin
  22.   p:=true;
  23.   visit[x,y]:=true;
  24.   if (x>1) and (a[x-1,y]>a[x,y]) then p:=false;
  25.   if p and (x<n) and (a[x+1,y]>a[x,y]) then p:=false;
  26.   if p and (y>1) and (a[x,y-1]>a[x,y]) then p:=false;
  27.   if p and (y<m) and (a[x,y+1]>a[x,y]) then p:=false;
  28.   if p and (x>1) and (y>1) and (a[x-1,y-1]>a[x,y]) then p:=false;
  29.   if p and (x>1) and (y<m) and (a[x-1,y+1]>a[x,y]) then p:=false;
  30.   if p and (x<n) and (y>1) and (a[x+1,y-1]>a[x,y]) then p:=false;
  31.   if p and (x<n) and (y<m) and (a[x+1,y+1]>a[x,y]) then p:=false;
  32.   if not p then
  33.   begin
  34.     dfs:=p;
  35.     if (x>1) and (a[x-1,y]=a[x,y]) and (not visit[x-1,y]) then dfs(x-1,y);
  36.     if (x<n) and (a[x+1,y]=a[x,y]) and (not visit[x+1,y]) then dfs(x+1,y);
  37.     if (y>1) and (a[x,y-1]=a[x,y]) and (not visit[x,y-1]) then dfs(x,y-1);
  38.     if (y<m) and (a[x,y+1]=a[x,y]) and (not visit[x,y+1]) then dfs(x,y+1);
  39.     if (x>1) and (y>1) and (a[x-1,y-1]=a[x,y]) and (not visit[x-1,y-1]) then dfs(x-1,y-1);
  40.     if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then dfs(x-1,y+1);
  41.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  42.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  43.   end;
  44.   if (x>1) and (a[x-1,y]=a[x,y]) and (not visit[x-1,y]) then p:=p and dfs(x-1,y);
  45.   if not p then
  46.   begin
  47.     dfs:=p;
  48.     if (x<n) and (a[x+1,y]=a[x,y]) and (not visit[x+1,y]) then dfs(x+1,y);
  49.     if (y>1) and (a[x,y-1]=a[x,y]) and (not visit[x,y-1]) then dfs(x,y-1);
  50.     if (y<m) and (a[x,y+1]=a[x,y]) and (not visit[x,y+1]) then dfs(x,y+1);
  51.     if (x>1) and (y>1) and (a[x-1,y-1]=a[x,y]) and (not visit[x-1,y-1]) then dfs(x-1,y-1);
  52.     if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then dfs(x-1,y+1);
  53.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  54.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  55.   end;
  56.   if (x<n) and (a[x+1,y]=a[x,y]) and (not visit[x+1,y]) then p:=p and dfs(x+1,y);
  57.   if not p then
  58.   begin
  59.     dfs:=p;
  60.     if (y>1) and (a[x,y-1]=a[x,y]) and (not visit[x,y-1]) then dfs(x,y-1);
  61.     if (y<m) and (a[x,y+1]=a[x,y]) and (not visit[x,y+1]) then dfs(x,y+1);
  62.     if (x>1) and (y>1) and (a[x-1,y-1]=a[x,y]) and (not visit[x-1,y-1]) then dfs(x-1,y-1);
  63.     if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then dfs(x-1,y+1);
  64.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  65.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  66.   end;
  67.   if (y>1) and (a[x,y-1]=a[x,y]) and (not visit[x,y-1]) then p:=p and dfs(x,y-1);
  68.   if not p then
  69.   begin
  70.     dfs:=p;
  71.     if (y<m) and (a[x,y+1]=a[x,y]) and (not visit[x,y+1]) then dfs(x,y+1);
  72.     if (x>1) and (y>1) and (a[x-1,y-1]=a[x,y]) and (not visit[x-1,y-1]) then dfs(x-1,y-1);
  73.     if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then dfs(x-1,y+1);
  74.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  75.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  76.   end;
  77.   if (y<m) and (a[x,y+1]=a[x,y]) and (not visit[x,y+1]) then p:=p and dfs(x,y+1);
  78.   if not p then
  79.   begin
  80.     dfs:=p;
  81.     if (x>1) and (y>1) and (a[x-1,y-1]=a[x,y]) and (not visit[x-1,y-1]) then dfs(x-1,y-1);
  82.     if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then dfs(x-1,y+1);
  83.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  84.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  85.   end;
  86.   if (x>1) and (y>1) and (a[x-1,y-1]=a[x,y]) and (not visit[x-1,y-1]) then p:=p and dfs(x-1,y-1);
  87.   if not p then
  88.   begin
  89.     dfs:=p;
  90.     if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then dfs(x-1,y+1);
  91.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  92.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  93.   end;
  94.   if (x>1) and (y<m) and (a[x-1,y+1]=a[x,y]) and (not visit[x-1,y+1]) then p:=p and dfs(x-1,y+1);
  95.   if not p then
  96.   begin
  97.     dfs:=p;
  98.     if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then dfs(x+1,y-1);
  99.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  100.   end;
  101.   if (x<n) and (y>1) and (a[x+1,y-1]=a[x,y]) and (not visit[x+1,y-1]) then p:=p and dfs(x+1,y-1);
  102.   if not p then
  103.   begin
  104.     dfs:=p;
  105.     if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then dfs(x+1,y+1);
  106.   end;
  107.   if (x<n) and (y<m) and (a[x+1,y+1]=a[x,y]) and (not visit[x+1,y+1]) then p:=p and dfs(x+1,y+1);
  108.   dfs:=p;
  109. end;
  110. procedure initvisit;
  111. var i,j:word;
  112. begin
  113.   for i:=1 to n do
  114.   for j:=1 to m do
  115.   visit[i,j]:=false;
  116. end;
  117. procedure printvisit;
  118. var i,j:word;
  119. begin
  120.   for i:=1 to n do
  121.   begin
  122.     for j:=1 to m do
  123.     write(visit[i,j]:5,' ');
  124.     writeln;
  125.   end;
  126. end;
  127. procedure solve;
  128. var i,j,res:word;
  129.     p:boolean;
  130. begin
  131.   res:=0;
  132.   for i:=1 to n do
  133.   for j:=1 to m do
  134.   if not visit[i,j] then
  135.   if dfs(i,j) then 
  136.   begin
  137.     inc(res);
  138.   end;
  139.   writeln(res);
  140. end;
  141. begin
  142.   enter;
  143.   solve;
  144. end.
  145.  
  146.  
  147.  
Success #stdin #stdout 0s 1732KB
comments (?)
stdin
copy 
8 7
4 3 2 2 1 0 1
3 3 3 2 1 0 1
2 2 2 2 1 0 0
2 1 1 1 1 0 0
1 1 0 0 0 1 0
0 0 0 1 1 1 0
0 1 2 2 1 1 0
0 1 1 1 2 1 0
stdout
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3
https://ideone.com/LzmaQq
language:
Pascal (fpc 3.0.4)
created:
9 years ago
visibility:
secret

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