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BFSMin 0 l tp hp cc s 0 c chung cnh. Hy vit chng trnh m cc min 0.Input: File loang.inp, trong

Dng u tin cho bit s dng m, s ct n M dng tip theo biu din bng vung gm cc s 0 hoc 1

Output: File loang.out, trong Gm mt dng duy nht cha s k cho bit s min 0

Loang.inp Loang.out4 70 0 1 0 1 1 00 0 1 1 1 0 00 0 0 0 0 0 00 0 0 0 0 0 0

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Constdx:array[1..4] of shortint=(-1,0,1,0);dy:array[1..4] of shortint=(0,-1,0,1);

Procedure BFS(i,j:integer); {LOANG chieu rong}Begin

Fillchar(d,sizeof(d),inf);Fillchar(p,sizeof(p),-1);color:=a; {To mau nhung dinh co gia tri 1}color[i,j]:=1;d[i,j]:=0;p[i,j]:=-1;head:=1; tail:=1;qx[head]:=i;qy[head]:=j;

while (head

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End;End;{---------------------------------------------CI TIN-------------------------------------}Procedure BFS(i,j:integer);Begin

Fillchar(color,sizeof(color),0);Fillchar(d,sizeof(d),inf);Fillchar(p,sizeof(p),-1);color:=a; {To mau nhung dinh co gia tri 1}color[i,j]:=1;d[i,j]:=0;p[i,j]:=-1;head:=1; tail:=1;qx[head]:=i;qy[head]:=j;while (head

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Writeln(x2-k, y2-k);End;

End;

DFS

Constdx:array[1..4] of shortint=(-1,0,1,0);dy:array[1..4] of shortint=(0,-1,0,1);

Procedure MainDFS;Begin

Fillchar(color, sizeof(color),0);Fillchar(p, sizeof(p),-1);time:=0;For i:=1 to m do

For j:=1 to n doIf color[i,j]=0 then

DFS(i,j);End;Procedure DFS(i,j:integer); {LOANG theo chieu sau}Var k:integer;Begin

color[i,j]:=1; {da tham, gray}S:=S+1;{time:=time+1;d[i,j]:=time;}For k:=1 to 4 do {Xet cac dinh}

if a[i+dx[k],j+dy[k]]=0 then {ke voi (i,j), co gia tri 0}if color[i+dx[k],j+dy[k]]=0 then {chua tham, white}Begin

color[i+dx[k],j+dy[k]]:=1; {da tham, gray}p[i+dx[k],j+dy[k]]:=k; {luu parent}DFS(i+dx[k],j+dy[k]);

End;color[i,j]:=2; {ket thuc, black}{time:=time+1;f[i,j]:=time;}

End;Procedure MainDFS;Var i,j:integer;

temp:integer;Begin

Assign(fo, fileout);Rewrite(fo);For i:=1 to maxR do

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For j:=1 to maxC dop[i,j]:=-1;

color:=a; {To mau truoc cac dinh co gia tri 1}dem:=0;For i:=1 to maxR do

For j:=1 to maxC doif (color[i,j]=0) then {chua tham, white}Begindem:=dem+1;DFS(i,j);End;

Writeln(fo,dem); {Dem so MIEN LIEN THONG}End;