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답안 #387984

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
387984 2021-04-09T15:55:30 Z myrcella Worst Reporter 4 (JOI21_worst_reporter4) C++17
79 / 100
 575 ms 58188 KB 
//by szh
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define pb push_back
#define debug(x) cerr<<#x<<"="<<x<<endl
#define pq priority_queue
#define inf 0x3f
#define rep(i,a,b) for (int i=a;i<(b);i++)
#define MP make_pair
#define SZ(x) (int(x.size()))
#define ll long long
#define big 1000000000
#define ALL(x) x.begin(),x.end()
int lowbit(int x) {return x&(-x);}

const int maxn=2e5+10;

int n;
vector <int> edge[maxn];
int h[maxn];
int c[maxn];

void combine(map<int,ll> &a,map<int,ll> b) {
	auto cur=a.begin();
	ll tmp=0;
	for (auto it=b.begin();it!=b.end();it++) {
		tmp+=it->se;
		cur->se+=tmp;
		cur=a.upper_bound(it->fi);
		if (cur!=a.end()) cur->se-=tmp;
		if (a.find(it->fi)==a.end()) {
			if (cur==a.end()) break;
			a[it->fi]=cur->se+tmp;
			cur->se=-tmp;
		}
	}
	while (cur!=a.end()) cur=a.erase(cur);
	return;
}

map<int,ll> solve(int u) {
	map<int,ll> ret;
	if (edge[u].empty()) {
		ret[big]=c[u];
		ret[h[u]]=0;
		return ret;
	}
	ret=solve(edge[u][0]);
	rep(i,1,SZ(edge[u])) {
		auto cur=solve(edge[u][i]);
		if (SZ(ret)<SZ(cur)) swap(cur,ret);
		combine(ret,cur);
	}
//	debug(ret.begin()->fi);debug(ret.begin()->se);
	auto it=ret.lower_bound(h[u]);
	if ((it->fi)!=h[u]) {
		ret[h[u]]=(it->se);
		it->se=0;
	}
	it=ret.find(h[u]);
	while (it!=ret.begin()&&((it->se)<=c[u])) {
		auto tmp=it;tmp--;
		it->se+=tmp->se;
		it=ret.erase(tmp);
	}
	it->se-=(ll)c[u];
	ret.begin()->se+=(ll)c[u];
	it=ret.upper_bound(h[u]);
	it->se+=(ll)c[u];
//	debug(u);
//	for (auto it=ret.begin();it!=ret.end();it++) cout<<(it->fi)<<" "<<(it->se)<<endl;
	return ret;
}

int main() {
//	freopen("input.txt","r",stdin);	
	std::ios::sync_with_stdio(false);cin.tie();
	cin>>n;
	h[0]=c[0]=0;
	rep(i,1,n+1) {
		int x;
		cin>>x>>h[i]>>c[i];
		if (x==i) edge[0].pb(i);
		else edge[x].pb(i);
	}
	cout<<(*solve(0).begin()).se;
	return 0;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 11 ms 5396 KB Output is correct
6 Correct 8 ms 5068 KB Output is correct
7 Correct 8 ms 5068 KB Output is correct
8 Correct 12 ms 5492 KB Output is correct
9 Correct 8 ms 5068 KB Output is correct
10 Correct 6 ms 5068 KB Output is correct
11 Correct 6 ms 5104 KB Output is correct
12 Correct 7 ms 6244 KB Output is correct
13 Correct 6 ms 6116 KB Output is correct
14 Correct 7 ms 5708 KB Output is correct
15 Correct 6 ms 5708 KB Output is correct
16 Correct 13 ms 5460 KB Output is correct
17 Correct 9 ms 5168 KB Output is correct
18 Correct 6 ms 5068 KB Output is correct
19 Correct 8 ms 5708 KB Output is correct
20 Correct 7 ms 5580 KB Output is correct
21 Correct 6 ms 5580 KB Output is correct
22 Correct 9 ms 5324 KB Output is correct
23 Correct 6 ms 5068 KB Output is correct
24 Correct 9 ms 5836 KB Output is correct
25 Correct 9 ms 5664 KB Output is correct
26 Correct 6 ms 6220 KB Output is correct
27 Correct 7 ms 5708 KB Output is correct
28 Correct 7 ms 5964 KB Output is correct
29 Correct 7 ms 6220 KB Output is correct
30 Correct 8 ms 6348 KB Output is correct
31 Correct 8 ms 6268 KB Output is correct

Subtask #2
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 5324 KB Output is correct
2 Correct 530 ms 25128 KB Output is correct
3 Correct 291 ms 10184 KB Output is correct
4 Correct 521 ms 21136 KB Output is correct
5 Correct 287 ms 10052 KB Output is correct
6 Correct 190 ms 9772 KB Output is correct
7 Correct 174 ms 9920 KB Output is correct
8 Correct 185 ms 53572 KB Output is correct
9 Correct 174 ms 53472 KB Output is correct
10 Correct 140 ms 53444 KB Output is correct
11 Correct 181 ms 33348 KB Output is correct
12 Correct 157 ms 33220 KB Output is correct
13 Correct 575 ms 25192 KB Output is correct
14 Correct 281 ms 10052 KB Output is correct
15 Correct 116 ms 9688 KB Output is correct
16 Correct 305 ms 37060 KB Output is correct
17 Correct 146 ms 30100 KB Output is correct
18 Correct 122 ms 29956 KB Output is correct
19 Correct 389 ms 19840 KB Output is correct
20 Correct 121 ms 7484 KB Output is correct
21 Correct 296 ms 37684 KB Output is correct
22 Correct 154 ms 30556 KB Output is correct
23 Correct 130 ms 53460 KB Output is correct
24 Correct 228 ms 39408 KB Output is correct
25 Correct 269 ms 51600 KB Output is correct
26 Correct 198 ms 57076 KB Output is correct
27 Correct 258 ms 58180 KB Output is correct
28 Correct 300 ms 58188 KB Output is correct

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 11 ms 5396 KB Output is correct
6 Correct 8 ms 5068 KB Output is correct
7 Correct 8 ms 5068 KB Output is correct
8 Correct 12 ms 5492 KB Output is correct
9 Correct 8 ms 5068 KB Output is correct
10 Correct 6 ms 5068 KB Output is correct
11 Correct 6 ms 5104 KB Output is correct
12 Correct 7 ms 6244 KB Output is correct
13 Correct 6 ms 6116 KB Output is correct
14 Correct 7 ms 5708 KB Output is correct
15 Correct 6 ms 5708 KB Output is correct
16 Correct 13 ms 5460 KB Output is correct
17 Correct 9 ms 5168 KB Output is correct
18 Correct 6 ms 5068 KB Output is correct
19 Correct 8 ms 5708 KB Output is correct
20 Correct 7 ms 5580 KB Output is correct
21 Correct 6 ms 5580 KB Output is correct
22 Correct 9 ms 5324 KB Output is correct
23 Correct 6 ms 5068 KB Output is correct
24 Correct 9 ms 5836 KB Output is correct
25 Correct 9 ms 5664 KB Output is correct
26 Correct 6 ms 6220 KB Output is correct
27 Correct 7 ms 5708 KB Output is correct
28 Correct 7 ms 5964 KB Output is correct
29 Correct 7 ms 6220 KB Output is correct
30 Correct 8 ms 6348 KB Output is correct
31 Correct 8 ms 6268 KB Output is correct
32 Correct 10 ms 5324 KB Output is correct
33 Correct 530 ms 25128 KB Output is correct
34 Correct 291 ms 10184 KB Output is correct
35 Correct 521 ms 21136 KB Output is correct
36 Correct 287 ms 10052 KB Output is correct
37 Correct 190 ms 9772 KB Output is correct
38 Correct 174 ms 9920 KB Output is correct
39 Correct 185 ms 53572 KB Output is correct
40 Correct 174 ms 53472 KB Output is correct
41 Correct 140 ms 53444 KB Output is correct
42 Correct 181 ms 33348 KB Output is correct
43 Correct 157 ms 33220 KB Output is correct
44 Correct 575 ms 25192 KB Output is correct
45 Correct 281 ms 10052 KB Output is correct
46 Correct 116 ms 9688 KB Output is correct
47 Correct 305 ms 37060 KB Output is correct
48 Correct 146 ms 30100 KB Output is correct
49 Correct 122 ms 29956 KB Output is correct
50 Correct 389 ms 19840 KB Output is correct
51 Correct 121 ms 7484 KB Output is correct
52 Correct 296 ms 37684 KB Output is correct
53 Correct 154 ms 30556 KB Output is correct
54 Correct 130 ms 53460 KB Output is correct
55 Correct 228 ms 39408 KB Output is correct
56 Correct 269 ms 51600 KB Output is correct
57 Correct 198 ms 57076 KB Output is correct
58 Correct 258 ms 58180 KB Output is correct
59 Correct 300 ms 58188 KB Output is correct
60 Incorrect 3 ms 4940 KB Output isn't correct
61 Halted 0 ms 0 KB -