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답안 #128088

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
128088 2019-07-10T12:05:04 Z faustaadp Chase (CEOI17_chase) C++17
50 / 100
 4000 ms 100132 KB 
#include<bits/stdc++.h>
typedef long long ll;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
ll n,k,i,a[101010],ta,tb,x[101010],has;
vector<ll> v[101010];
ll d[100010][110];
ll depe(ll aa,ll bb,ll cc)
{
	if(d[aa][bb]==-1)
	{
		d[aa][bb]=0;
		ll ii;
		for(ii=0;ii<v[aa].size();ii++)
		{
			if(v[aa][ii]==cc)continue;
			d[aa][bb]=max(d[aa][bb],depe(v[aa][ii],bb,aa));
			if(bb)
				d[aa][bb]=max(d[aa][bb],depe(v[aa][ii],bb-1,aa)+x[aa]-a[cc]);
		}
	}
	return d[aa][bb];
}
int main()
{
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n>>k;
	for(i=1;i<=n;i++)
		cin>>a[i];
	for(i=1;i<n;i++)
	{
		cin>>ta>>tb;
		v[ta].pb(tb);
		v[tb].pb(ta);
		x[ta]+=a[tb];
		x[tb]+=a[ta];
	}
	for(i=1;i<=n;i++)
	{
		memset(d,-1,sizeof(d));
		has=max(has,depe(i,k,0));
		if(n>1000)break;
	}
	cout<<has<<"\n";
}

Compilation message

chase.cpp: In function 'll depe(ll, ll, ll)':
chase.cpp:17:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ii=0;ii<v[aa].size();ii++)
            ~~^~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 211 ms 88824 KB Output is correct
2 Correct 209 ms 88884 KB Output is correct
3 Correct 210 ms 88824 KB Output is correct
4 Correct 207 ms 88880 KB Output is correct
5 Correct 208 ms 88876 KB Output is correct
6 Correct 241 ms 88880 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 211 ms 88824 KB Output is correct
2 Correct 209 ms 88884 KB Output is correct
3 Correct 210 ms 88824 KB Output is correct
4 Correct 207 ms 88880 KB Output is correct
5 Correct 208 ms 88876 KB Output is correct
6 Correct 241 ms 88880 KB Output is correct
7 Execution timed out 4011 ms 88952 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #3
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 438 ms 98040 KB Output is correct
2 Correct 436 ms 100132 KB Output is correct
3 Correct 129 ms 96488 KB Output is correct
4 Correct 153 ms 96248 KB Output is correct
5 Correct 618 ms 96264 KB Output is correct
6 Correct 469 ms 96324 KB Output is correct
7 Correct 473 ms 96400 KB Output is correct

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 211 ms 88824 KB Output is correct
2 Correct 209 ms 88884 KB Output is correct
3 Correct 210 ms 88824 KB Output is correct
4 Correct 207 ms 88880 KB Output is correct
5 Correct 208 ms 88876 KB Output is correct
6 Correct 241 ms 88880 KB Output is correct
7 Execution timed out 4011 ms 88952 KB Time limit exceeded
8 Halted 0 ms 0 KB -