Morass

13164

Nov 2nd, 2017
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C++ 1.95 KB | None | 0 0
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define PB push_back
  4. #define ZERO (1e-10)
  5. #define INF (1<<29)
  6. #define CL(A,I) (memset(A,I,sizeof(A)))
  7. #define DEB printf("DEB!\n");
  8. #define D(X) cout<<"  "<<#X": "<<X<<endl;
  9. #define EQ(A,B) (A+ZERO>B&&A-ZERO<B)
  10. typedef long long ll;
  11. typedef long double ld;
  12. typedef pair<ll,ll> pll;
  13. typedef vector<int> vi;
  14. typedef pair<int,int> ii;
  15. typedef vector<ii> vii;
  16. #define IN(n) int n;scanf("%d",&n);
  17. #define FOR(i, m, n) for (int i(m); i < n; i++)
  18. #define REP(i, n) FOR(i, 0, n)
  19. #define F(n) REP(i, n)
  20. #define FF(n) REP(j, n)
  21. #define FT(m, n) FOR(k, m, n)
  22. #define aa first
  23. #define bb second
  24. void ga(int N,int *A){F(N)scanf("%d",A+i);}
  25. #define MX (100016)
  26. vi g[MX];
  27. int N,a,b,R,t[MX],L[MX];
  28. //FW
  29. struct FW{
  30.     ll t[MX],S;
  31.     void clr(int s){CL(t,0);S=s;}
  32.     void inc(int i,int d){for(;i<S;i|=i+1)t[i]+=d;}
  33.     ll sum(int i){ll s(0);while(~i)s+=t[i],i&=i+1,--i;return s;}
  34.     ll gt(int l,int r){return sum(r)-sum(l-1);}
  35. }Z;
  36. //DECO!
  37. ll dp[MX];
  38. int S[MX],D[MX],F[MX],T[MX],C,V[MX],A,I[MX];
  39. void pre(int u=0,int d=0){
  40.     int X=-INF;
  41.     S[u]=1,D[u]=d++,V[T[u]=C++]=u,I[u]=-1;
  42.     for(auto&h:g[u]){
  43.         pre(h,d);
  44.         if(S[h]>X)X=S[h],I[u]=h;
  45.         S[u]+=S[h];
  46.     }
  47.     F[u]=C;
  48. }
  49. void clr(int u){
  50.     Z.inc(L[u],-t[u]);
  51. }
  52. void ats(int u,int v){
  53.     Z.inc(L[u],t[u]);
  54. }
  55. ll uca(int u,int v){
  56.     return Z.sum(L[u]-1);
  57. }
  58. void dfs(int u,bool x){
  59.     for(auto&h:g[u])if(h^I[u])dfs(h,1);
  60.     if(~I[u])dfs(I[u],0);
  61.     for(auto&h:g[u])if(h^I[u]){
  62.         FT(T[h],F[h])ats(V[k],u);
  63.     }
  64.     dp[u]=max(dp[u],uca(u,u)),ats(u,u);
  65.     if(x)FT(T[u],F[u])clr(V[k]);
  66. }
  67. void CLR(){for(auto&h:g)h.clear();CL(dp,C=0);}
  68. int main(void){
  69.     while(~scanf("%d",&N)){
  70.         CLR(),Z.clr(MX-3);
  71.         F(N){
  72.             scanf("%d%d%d",&a,L+i,t+i);
  73.             if(~a)g[--a].PB(i);
  74.             else R=i;
  75.         }
  76.         pre(R),dfs(R,1);
  77.         F(N)printf("%lld\n",dp[i]);
  78.     }
  79.     return 0;
  80. }
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