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  1. {$m 10000500}
  2. const maxn = 1000000;
  3.  
  4. var
  5.   fwt,wage:array[0..maxn] of int64;
  6.   f,t,p,tin,tout:array[0..maxn] of longint;
  7.   x,y,pred,ii,timer,n,m,i,j:longint;
  8.   ch:chAR;
  9.  
  10. procedure addedge(const x, y:longint);
  11. begin
  12.   inc(ii);
  13.   t[ii]:=y;
  14.   p[ii]:=f[x];
  15.   f[x]:=ii;
  16. end;
  17.  
  18. procedure dfs(const k:longint);
  19. var
  20.   q:longint;
  21. begin
  22.   inc(timer); tin[k]:=timer;
  23.   q:=f[k];
  24.   while q>0 do
  25.   begin
  26.     dfs(t[q]);
  27.     q:=p[q];
  28.   end;
  29.   tout[k]:=timer;
  30. end;
  31.  
  32. procedure fwt_modify(j, x:longint);
  33. begin
  34.   while j<=n do
  35.   begin
  36.     inc(fwt[j], x);
  37.     j:=j or (j-1)+1;
  38.   end;
  39. end;
  40.  
  41. function fwt_findsum(j:longint):int64;
  42. var
  43.   res:int64;
  44. begin
  45.   res:=0;
  46.   while j>0 do
  47.   begin
  48.     inc(res, fwt[j]);
  49.     j:=j and (j-1);
  50.   end;
  51.   fwt_findsum:=res;
  52. end;
  53.  
  54. begin
  55. {  assign(input, 'in.txt');
  56.   reset(input);
  57.   assign(output, 'out.txt');
  58.   rewrite(output);}
  59.   readln(n, m);
  60.   readln(wage[1]);
  61.   for i:=2 to n do 
  62.   begin
  63.     readln(wage[i], pred);
  64.     addedge(pred, i);
  65.   end;
  66.   dfs(1);
  67.   for i:=1 to m do
  68.   begin
  69.     read(ch);
  70.     if ch = 'u' then
  71.     begin
  72.       readln(x);
  73.       writeln(fwt_findsum(tin[x])+wage[x]);
  74.     end else
  75.     begin
  76.       readln(x, y);
  77.       fwt_modify(tin[x]+1, y);
  78.       fwt_modify(tout[x]+1, -y);
  79.     end;
  80.   end;
  81.   close(output);
  82. end.
Runtime error #stdin #stdout 0.01s 35416KB
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Standard input is empty
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Runtime error 106 at $0804829E
  $0804829E
  $0805F141
https://ideone.com/O2cui
language:
Pascal (fpc 3.0.4)
created:
12 years ago
visibility:
public

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