# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
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1109730 | 2024-11-07T12:36:35 Z | Trisanu_Das | 트리 (IOI24_tree) | C++17 | 0 ms | 0 KB |
#include <bits/stdc++.h> using namespace std; typedef long long ll; const int MAX_NODES = 300005; int n, child_count[MAX_NODES], leaf_count; vector<int> parent, weight; void init(const vector<int>& _parent, const vector<int>& _weight) { parent = _parent; weight = _weight; n = parent.size(); fill(child_count, child_count + n, 0); leaf_count = 0; for (int i = 1; i < n; i++) child_count[parent[i]]++; for (int i = 0; i < n; i++) if (child_count[i] == 0) leaf_count++; } ll query(int left, int right) { return leaf_count * (ll)left + max(0LL, leaf_count * (ll)left - right); }