제출 #1166161

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1166161		anmattroi	트리 (IOI24_tree)	C++17	0 / 100	2095 ms	6892 KiB

tree

#include "tree.h"
#include <bits/stdc++.h>
#define maxn 200005
using namespace std;

int n;
vector<int> par, w;
int64_t cost[maxn];

void init(vector<int> P, vector<int> W) {
    n = P.size(); par = P; w = W;
}

long long query(int L, int R) {
    int64_t ans = 0;
    for (int i = 0; i < n; i++) cost[i] = 0;
    for (int i = n-1; i >= 0; i--) {
        if (cost[i] > R) {
            int64_t cur_coef = R-cost[i];
            if (par[i] >= 0) cost[par[i]] += cur_coef;
            ans += w[i] * (-cur_coef);
            continue;
        }
        if (cost[i] < L) {
            int64_t cur_coef = L-cost[i];
            if (par[i] >= 0) cost[par[i]] += cur_coef;
            ans += w[i] * cur_coef;
        }
    }
    return ans;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 18
• Subtask 4: 0 / 7
• Subtask 5: 0 / 11
• Subtask 6: 0 / 22
• Subtask 7: 0 / 19