oj.uz

답안 #398810

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
398810 2021-05-04T20:30:46 Z ChrisT Worst Reporter 4 (JOI21_worst_reporter4) C++17
79 / 100
 1947 ms 75308 KB 
#include <bits/stdc++.h>
using namespace std;
const int MN = 2e5 + 5;
#define lc ind<<1
#define rc ind<<1|1
struct Node { //range add, range set, some kind of walking
	long long mx,alz,slz;
	Node () {mx = alz = 0; slz = -1;}
} tree[MN << 2];
void push_down (int ind, int l, int r) {
	if (tree[ind].slz >= 0) {
		tree[ind].mx = tree[ind].slz;
		if (l != r) {
			tree[lc].slz = tree[rc].slz = tree[ind].slz;
			tree[lc].alz = tree[rc].alz = 0;
		}
		tree[ind].slz = -1;
	}
	if (tree[ind].alz) {
		tree[ind].mx += tree[ind].alz;
		if (l != r) {
			tree[lc].alz += tree[ind].alz;
			tree[rc].alz += tree[ind].alz;
		}
		tree[ind].alz = 0;
	}
}
void update (int ind, int tl, int tr, int l, int r, long long v) {
	push_down(ind,tl,tr);
	if (tl > r || tr < l) return;
	if (l <= tl && tr <= r) {
		tree[ind].alz += v;
		push_down(ind,tl,tr);
		return;
	}
	int mid = (tl + tr) / 2;
	update(lc,tl,mid,l,r,v); update(rc,mid+1,tr,l,r,v);
	tree[ind].mx = max(tree[lc].mx,tree[rc].mx);
}
int walk (int ind, int tl, int tr, long long v) {
	push_down(ind,tl,tr);
	if (tl == tr) return tree[ind].mx > v ? tl : -1;
	int mid = (tl + tr) / 2;
	push_down(lc,tl,mid);
	if (tree[lc].mx > v) return walk(lc,tl,mid,v);
	return walk(rc,mid+1,tr,v);
}
void setv (int ind, int tl, int tr, int l, int r, long long v) {
	push_down(ind,tl,tr);
	if (tl > r || tr < l) return;
	if (l <= tl && tr <= r) {
		tree[ind].slz = v; tree[ind].alz = 0;
		push_down(ind,tl,tr);
		return;
	}
	int mid = (tl + tr) / 2;
	setv(lc,tl,mid,l,r,v); setv(rc,mid+1,tr,l,r,v);
	tree[ind].mx = max(tree[lc].mx,tree[rc].mx);
}
long long query (int ind, int tl, int tr, int i) {
	push_down(ind,tl,tr);
	if (tl == tr) return tree[ind].mx;
	int mid = (tl + tr) / 2;
	if (i <= mid) return query(lc,tl,mid,i);
	return query(rc,mid+1,tr,i);
}
int a[MN], h[MN], c[MN], sz[MN], st[MN], ed[MN], at[MN], big[MN], tt;
vector<int> adj[MN], xs;
int getx (int x) {return lower_bound(xs.begin(),xs.end(),x) - xs.begin() + 1;}
void getsz (int cur) {
	sz[cur] = 1; st[cur] = ++tt; at[tt] = cur;
	for (int i : adj[cur]) {
		getsz(i);
		sz[cur] += sz[i];
		if (sz[i] > sz[big[cur]]) big[cur] = i;
	}
	ed[cur] = tt;
}
vector<pair<int,long long>> dp[MN];
void dfs (int cur, bool del = false) {
	for (int i : adj[cur]) if (i != big[cur]) dfs(i,true);
	if (big[cur]) dfs(big[cur],false);
	for (int i : adj[cur]) if (i != big[cur]) {
		int lst = 1;
		for (auto [j,v] : dp[i]) {
			if (lst <= j) update(1,1,(int)xs.size(),lst,j,v);
			lst = j+1;
		}
	}
	update(1,1,(int)xs.size(),1,(int)xs.size(),c[cur]);
	long long getv = query(1,1,(int)xs.size(),h[cur])-c[cur];
	int pos = walk(1,1,(int)xs.size(),getv);
	if (pos <= h[cur]) setv(1,1,(int)xs.size(),pos,h[cur],getv);
	if (del) {
		vector<int> hs;
		for (int j = st[cur]; j <= ed[cur]; j++) hs.push_back(h[at[j]]);
		hs.push_back((int)xs.size());
		sort(hs.begin(),hs.end());
		hs.erase(unique(hs.begin(),hs.end()),hs.end());
		dp[cur].resize(hs.size());
		for (int i = 0; i < (int)hs.size(); i++) dp[cur][i] = {hs[i],query(1,1,(int)xs.size(),hs[i])};
		tree[1].slz = tree[1].alz = 0;
	}
}
int main () {
	int n; scanf ("%d",&n);
	for (int i = 1; i <= n; i++) {
		scanf ("%d %d %d",&a[i],&h[i],&c[i]);
		xs.push_back(h[i]);
		if (i > 1) adj[a[i]].push_back(i);
	}
	sort(xs.begin(),xs.end()); xs.erase(unique(xs.begin(),xs.end()),xs.end());
	for (int i = 1; i <= n; i++) h[i] = getx(h[i]);
	getsz(1);
	dfs(1);
	printf ("%lld\n",query(1,1,(int)xs.size(),1));
	return 0;
}

Compilation message

worst_reporter2.cpp: In function 'int main()':
worst_reporter2.cpp:106:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  106 |  int n; scanf ("%d",&n);
      |         ~~~~~~^~~~~~~~~
worst_reporter2.cpp:108:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  108 |   scanf ("%d %d %d",&a[i],&h[i],&c[i]);
      |   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 28492 KB Output is correct
2 Correct 16 ms 28412 KB Output is correct
3 Correct 14 ms 28444 KB Output is correct
4 Correct 30 ms 28476 KB Output is correct
5 Correct 36 ms 29164 KB Output is correct
6 Correct 29 ms 29116 KB Output is correct
7 Correct 20 ms 29040 KB Output is correct
8 Correct 38 ms 29132 KB Output is correct
9 Correct 24 ms 29132 KB Output is correct
10 Correct 20 ms 29012 KB Output is correct
11 Correct 19 ms 28868 KB Output is correct
12 Correct 22 ms 29608 KB Output is correct
13 Correct 18 ms 29644 KB Output is correct
14 Correct 25 ms 29372 KB Output is correct
15 Correct 19 ms 29252 KB Output is correct
16 Correct 38 ms 29320 KB Output is correct
17 Correct 25 ms 29144 KB Output is correct
18 Correct 18 ms 28892 KB Output is correct
19 Correct 23 ms 29316 KB Output is correct
20 Correct 23 ms 29264 KB Output is correct
21 Correct 20 ms 29348 KB Output is correct
22 Correct 27 ms 29028 KB Output is correct
23 Correct 24 ms 29052 KB Output is correct
24 Correct 27 ms 29324 KB Output is correct
25 Correct 25 ms 29268 KB Output is correct
26 Correct 22 ms 29644 KB Output is correct
27 Correct 26 ms 29268 KB Output is correct
28 Correct 25 ms 29416 KB Output is correct
29 Correct 24 ms 29476 KB Output is correct
30 Correct 23 ms 29260 KB Output is correct
31 Correct 22 ms 29388 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 29164 KB Output is correct
2 Correct 1453 ms 56636 KB Output is correct
3 Correct 772 ms 51428 KB Output is correct
4 Correct 1404 ms 55572 KB Output is correct
5 Correct 692 ms 51384 KB Output is correct
6 Correct 298 ms 45104 KB Output is correct
7 Correct 238 ms 42684 KB Output is correct
8 Correct 454 ms 70852 KB Output is correct
9 Correct 265 ms 70696 KB Output is correct
10 Correct 156 ms 70536 KB Output is correct
11 Correct 507 ms 58928 KB Output is correct
12 Correct 263 ms 57364 KB Output is correct
13 Correct 1947 ms 65944 KB Output is correct
14 Correct 779 ms 60660 KB Output is correct
15 Correct 155 ms 46324 KB Output is correct
16 Correct 563 ms 62256 KB Output is correct
17 Correct 319 ms 62068 KB Output is correct
18 Correct 182 ms 61720 KB Output is correct
19 Correct 681 ms 49196 KB Output is correct
20 Correct 383 ms 49124 KB Output is correct
21 Correct 538 ms 62580 KB Output is correct
22 Correct 345 ms 62568 KB Output is correct
23 Correct 312 ms 75308 KB Output is correct
24 Correct 635 ms 61712 KB Output is correct
25 Correct 515 ms 67720 KB Output is correct
26 Correct 452 ms 70240 KB Output is correct
27 Correct 388 ms 62764 KB Output is correct
28 Correct 390 ms 62784 KB Output is correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 14 ms 28492 KB Output is correct
2 Correct 16 ms 28412 KB Output is correct
3 Correct 14 ms 28444 KB Output is correct
4 Correct 30 ms 28476 KB Output is correct
5 Correct 36 ms 29164 KB Output is correct
6 Correct 29 ms 29116 KB Output is correct
7 Correct 20 ms 29040 KB Output is correct
8 Correct 38 ms 29132 KB Output is correct
9 Correct 24 ms 29132 KB Output is correct
10 Correct 20 ms 29012 KB Output is correct
11 Correct 19 ms 28868 KB Output is correct
12 Correct 22 ms 29608 KB Output is correct
13 Correct 18 ms 29644 KB Output is correct
14 Correct 25 ms 29372 KB Output is correct
15 Correct 19 ms 29252 KB Output is correct
16 Correct 38 ms 29320 KB Output is correct
17 Correct 25 ms 29144 KB Output is correct
18 Correct 18 ms 28892 KB Output is correct
19 Correct 23 ms 29316 KB Output is correct
20 Correct 23 ms 29264 KB Output is correct
21 Correct 20 ms 29348 KB Output is correct
22 Correct 27 ms 29028 KB Output is correct
23 Correct 24 ms 29052 KB Output is correct
24 Correct 27 ms 29324 KB Output is correct
25 Correct 25 ms 29268 KB Output is correct
26 Correct 22 ms 29644 KB Output is correct
27 Correct 26 ms 29268 KB Output is correct
28 Correct 25 ms 29416 KB Output is correct
29 Correct 24 ms 29476 KB Output is correct
30 Correct 23 ms 29260 KB Output is correct
31 Correct 22 ms 29388 KB Output is correct
32 Correct 33 ms 29164 KB Output is correct
33 Correct 1453 ms 56636 KB Output is correct
34 Correct 772 ms 51428 KB Output is correct
35 Correct 1404 ms 55572 KB Output is correct
36 Correct 692 ms 51384 KB Output is correct
37 Correct 298 ms 45104 KB Output is correct
38 Correct 238 ms 42684 KB Output is correct
39 Correct 454 ms 70852 KB Output is correct
40 Correct 265 ms 70696 KB Output is correct
41 Correct 156 ms 70536 KB Output is correct
42 Correct 507 ms 58928 KB Output is correct
43 Correct 263 ms 57364 KB Output is correct
44 Correct 1947 ms 65944 KB Output is correct
45 Correct 779 ms 60660 KB Output is correct
46 Correct 155 ms 46324 KB Output is correct
47 Correct 563 ms 62256 KB Output is correct
48 Correct 319 ms 62068 KB Output is correct
49 Correct 182 ms 61720 KB Output is correct
50 Correct 681 ms 49196 KB Output is correct
51 Correct 383 ms 49124 KB Output is correct
52 Correct 538 ms 62580 KB Output is correct
53 Correct 345 ms 62568 KB Output is correct
54 Correct 312 ms 75308 KB Output is correct
55 Correct 635 ms 61712 KB Output is correct
56 Correct 515 ms 67720 KB Output is correct
57 Correct 452 ms 70240 KB Output is correct
58 Correct 388 ms 62764 KB Output is correct
59 Correct 390 ms 62784 KB Output is correct
60 Correct 16 ms 28416 KB Output is correct
61 Incorrect 16 ms 28476 KB Output isn't correct
62 Halted 0 ms 0 KB -