31 lines
726 B
Plaintext
31 lines
726 B
Plaintext
uses math;
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var map,dp:array[0..500,0..500] of longint;
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r,c,i,j,ans:longint;
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function search(x,y:longint):longint;
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var res:longint;
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begin
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res:=1;
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if dp[x,y]<>0 then exit(dp[x,y]);
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if (x>1) and (map[x-1,y]<map[x,y]) then res:=max(res,search(x-1,y)+1);
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if (y>1) and (map[x,y-1]<map[x,y]) then res:=max(res,search(x,y-1)+1);
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if (x<r) and (map[x+1,y]<map[x,y]) then res:=max(res,search(x+1,y)+1);
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if (y<c) and (map[x,y+1]<map[x,y]) then res:=max(res,search(x,y+1)+1);
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dp[x,y]:=res;
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exit(res);
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end;
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begin
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read(r,c);
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for i:=1 to r do
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for j:=1 to c do
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read(map[i,j]);
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ans:=1;
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fillchar(dp,sizeof(dp),0);
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for i:=1 to r do
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for j:=1 to c do
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ans:=max(ans,search(i,j));
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write(ans);
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end.
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