oj.uz

답안 #406170

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
406170 2021-05-17T09:00:09 Z dvdg6566 Worst Reporter 4 (JOI21_worst_reporter4) C++14
0 / 100
 11 ms 5228 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pi;
typedef vector<ll> vi;
typedef vector<pi> vpi;
#define pb emplace_back
#define f first 
#define s second
#define mp make_pair
#define SZ(x) (ll)x.size()
#define ALL(x) x.begin(),x.end()
#define lb lower_bound
#define ub upper_bound

const ll MAXN = 200100;
const ll MAXK = 19;
ll p[MAXN];
ll H[MAXN],C[MAXN];
ll N;
vi V[MAXN];
vi roots;
ll ans;
ll dp1[MAXN];

ll calc(ll x,ll c){
	ll r=0;
	if(H[x]>=c)r=dp1[x];
	for(auto v:V[x])r=max(r,calc(v,c));
	return r;
}

ll solve(ll x){
	ll r1=0;
	for(auto v:V[x])r1+=solve(v);
	// if you choose to continue, everything else chosen must be not less
	ll tx=C[x];
	for(auto v:V[x]){
		// cerr<<"Calc "<<v<<' '<<calc(v,H[x])<<'\n';
		tx+=calc(v,H[x]);
	}
	// cerr<<"DP "<<x<<' '<<tx<<' '<<r1<<'\n';
	dp1[x]=tx;
	// if(x==2)exit(0);
	return max(tx,r1);
}

int main(){
	cin>>N;
	for(ll i=1;i<=N;++i){
		cin>>p[i]>>H[i]>>C[i];
		if(p[i]==i){
			p[i]=-1;
			roots.pb(i);
		}else V[p[i]].pb(i);
		ans+=C[i];
	}
	for(auto i:roots){
		ans-=solve(i);
	}
	cout<<ans;
}

Subtask #1
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 5 ms 4940 KB Output is correct
5 Incorrect 10 ms 5228 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 11 ms 5220 KB Output isn't correct
2 Halted 0 ms 0 KB -

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 5 ms 4940 KB Output is correct
5 Incorrect 10 ms 5228 KB Output isn't correct
6 Halted 0 ms 0 KB -