Submission #1210198

#	Time	Username	Problem	Language	Result	Execution time	Memory
1210198		bakhtiyarn	Vinjete (COI22_vinjete)	C++20	0 / 100	18 ms	7516 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long

const int N = 2e5+5;
const int N2 = 1e5+1;
vector<array<int, 3>> g[N2];
int ans[N2];

int n, M;
int nxt = 1;

unordered_map<int, int> L, R, sg;
unordered_map<int, bool> lz;

void push(int u, int l, int r, int U, unordered_map<int, int> &usedsg, unordered_map<int, bool> &usedlz){
  if(lz[u]) {
    if(!usedsg[u]) usedsg[u] = sg[u];
    sg[u] = r-l+1;
  }
  
  if(l != r){
    if(!L[u]) L[u] = ++nxt;
    if(!R[u]) R[u] = ++nxt;
    
    if(L[u]) {
      if(!usedlz[L[u]]) usedlz[L[u]] = lz[L[u]];
      lz[L[u]] += lz[u];
    }
    
    if(R[u]) {
      if(!usedlz[R[u]]) usedlz[R[u]] = lz[R[u]];
      lz[R[u]] += lz[u];
    }
    
    if(l == 1 and r == 3 and U == 3){
      // cout << lz[R[u]] << endl;
    }
  }
}

void update(int u, int l, int r, int x, int y, int U, unordered_map<int, int> &usedsg, unordered_map<int, bool> &usedlz){
  push(u, l, r, U, usedsg, usedlz);
  if(y < l or x > r) return;
  if(x <= l and y >= r){
    if(!usedlz[u]) usedlz[u] = lz[u];
    lz[u] = true;
    
    push(u, l, r, U, usedsg, usedlz);
    return;
  }
  
  ///
    int m = (l+r)/2;
    int add = 0;
    
    if(y < l or x > m) {
      if(L[u]) push(L[u], l, m, U, usedsg, usedlz);
    }
    else {
      if(!L[u]) L[u] = ++nxt;
      
      push(u, l, r, U, usedsg, usedlz);
      update(L[u], l, m, x, y, U, usedsg, usedlz);
    }
    
    if(y < m+1 or x > r) {
      if(R[u]) push(R[u], m+1, r, U, usedsg, usedlz);
    }
    else {
      if(!R[u]) R[u] = ++nxt;
      
      push(u, l, r, U, usedsg, usedlz);
      update(R[u], m+1, r, x, y, U, usedsg, usedlz);
    }
  ///
  
  if(!usedsg[u]) usedsg[u] = sg[u];
  
  int sol = 0, sag = 0;
  if(L[u]) sol = L[u];
  if(R[u]) sag = R[u];
  
  sg[u] = sg[sol] + sg[sag] + add;
  // if(lz[u]) sg[u] = r-l+1;
  
}




void dfs(int u, int p, int li, int ri){
  unordered_map<int, int> usedsg;
  unordered_map<int, bool> usedlz;
  
  update(1, 1, M, li, ri, u, usedsg, usedlz);
  ans[u] = sg[1];
  
  for(auto [to, lj, rj]: g[u]){
    if(to == p) continue;
    dfs(to, u, lj, rj);
  }
  
  for(auto [node, ans]: usedsg) sg[node] = ans;
  for(auto [node, ans]: usedlz) lz[node] = ans;
}

signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  
  cin >> n >> M;
  for(int i=1; i<n; i++){
    int x, y, li, ri; cin >> x >> y >> li >> ri;
    g[x].push_back({y, li, ri});
    g[y].push_back({x, li, ri});
  }
  
  dfs(1, -1, 0, 0);
  
  for(int i=2; i<=n; i++) cout << ans[i] << '\n';
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 13
• Subtask 3: 0 / 16
• Subtask 4: 0 / 29
• Subtask 5: 0 / 31