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Cod sursa(job #380596)
const inf=maxint div 2;
type ref=^lista;
lista=record
vf,c:word;
leg:ref;
end;
var g:array[1..50000] of ref;
h,d,t:array[1..50000] of word;
n,m,x0,nv:word;
procedure adauga(x,y,c:word);
var p:ref;
begin
new(p);p^.vf:=y;p^.c:=c;p^.leg:=g[x];g[x]:=p;
end;
procedure citeste;
var i,x,y,c:word;
begin
assign(input,'dijkstra.in');reset(input);
readln(n,m);
for i:=1 to m do
begin
readln(x,y,c);
adauga(x,y,c);
end;
nv:=n;
close(input);
end;
procedure comb(i,n:word);
var l,r,go,aux:word;
begin
l:=2*i;r:=2*i+1;
go:=0;
if (l<=n) and (d[h[l]]<d[h[i]]) then go:=l;
if (r<=n) and (d[h[r]]<d[h[i]]) then go:=r;
if go>0 then begin
aux:=h[go];
h[go]:=h[i];
h[i]:=aux;
comb(go,aux);
end;
end;
function elim:word;
var aux:word;
begin
elim:=h[1];
aux:=h[1];
h[1]:=h[nv];
h[nv]:=aux;
dec(nv);
end;
procedure formheap;
var i:word;
begin
for i:=nv div 2 downto 1 do
comb(i,nv);
end;
procedure dijkstra;
var p:ref;
i,k:word;
begin
p:=g[x0];
for i:=1 to n do
begin
d[i]:=inf;
h[i]:=i;
end;
while p<>nil do
begin
d[p^.vf]:=p^.c;
t[p^.vf]:=x0;
p:=p^.leg;
end;
formheap;
while nv>0 do
begin
k:=elim;
p:=g[k];
while p<>nil do begin
if d[k]+p^.c<d[p^.vf] then begin
d[p^.vf]:=d[k]+p^.c;
t[p^.vf]:=k;
end;
p:=p^.leg;
end;
formheap;
end;
end;
procedure afisare;
var i:word;
begin
assign(output,'dijkstra.out');rewrite(output);
for i:=2 to n do
if d[i]<inf then begin write(d[i],' ');
end
else write(0);
close(output);
end;
begin
citeste; x0:=1;
dijkstra;
afisare;
end.