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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#199813#7347. HDRFDelay_for_five_minutes#WA 1ms8316kbC++141.7kb2023-10-04 14:09:502023-10-04 14:09:50

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  • [2023-10-04 14:09:50]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:8316kb
  • [2023-10-04 14:09:50]
  • 提交

answer

#include<bits/stdc++.h>
#define maxn 100005
#define MXVAL 1000000000
int mn[maxn << 2];
int r[maxn];
int dfn[maxn],sz[maxn],cnt,idx[maxn];
int min(int u, int v) {
	if (u == 0 || v == 0) return v + u;

	return r[u] > r[v] ? v : u;
}
void build(int pos,int l,int r) {
	if (l == r) {
		mn[pos] = idx[l];
		return ;
	}
	int mid = (l+r) >> 1;
	build(pos << 1, l, mid);
	build(pos << 1 | 1, mid + 1, r);
	mn[pos] = min(mn[pos << 1], mn[pos << 1 | 1]);
}
int query(int pos,int l,int r,int ql,int qr) {
	if (r < ql || l > qr) return 0;
	if (ql <= l && r <= qr) {
		return mn[pos];
	}
	int mid = (l+r) >> 1;
	return min(query(pos << 1, l, mid, ql, qr),query(pos << 1 | 1, mid + 1, r, ql, qr));
}
void update(int pos,int l,int r,int p) {
	if (l == r) return ;
	int mid = (l+r) >> 1;
	if (p <= mid) update(pos << 1, l, mid, p);
	else update(pos << 1 | 1,mid + 1, r, p);
	mn[pos] = min(mn[pos << 1], mn[pos << 1 | 1]);
}
int n;
std::vector<int> G[maxn];
std::vector<int> ans;
void DFS(int u) {
	dfn[u] = ++cnt;
	sz[u] = 1;
	idx[cnt] = u;
	for(auto i : G[u]) {
		DFS(i);
		sz[u] += sz[i];
	}
}
void dfs(int u) {
	r[u] = 1e9 + 1;
	update(1, 1, n, u);
	for(int val = query(1, 1, n, dfn[u],dfn[u] + sz[u] - 1); r[val] <= MXVAL;) {
		dfs(val);
		val = query(1, 1, n, dfn[u],dfn[u] + sz[u] - 1);
	}
	ans.push_back(u);
}
int main() {
	std::ios::sync_with_stdio(0);std::cin.tie(0);
	// freopen("in.txt","r",stdin);
	std::cin >> n;
	for(int i = 2; i <= n; i++) {
		int x;
		std::cin >> x;
		G[x].push_back(i);
	}
	for(int i=1;i<=n;i++) {
		std::cin >> r[i];
	}
	DFS(1);
	// for(int i = 1;i<=n;i++) {
	// 	printf("%d\n",dfn[i]);
	// }
	build(1,1,n);
	dfs(1);
	for(auto i:ans) {
		printf("%d ", i);
	}
	putchar('\n');
}

Details

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Test #1:

score: 0
Wrong Answer
time: 1ms
memory: 8316kb

input:

5
4 4 1 1
3 5 2 1 4

output:

3 2 4 1 

result:

wrong answer 4th numbers differ - expected: '5', found: '1'