oj.uz

Submission #128087

# Submission time Handle Problem Language Result Execution time Memory
128087 2019-07-10T12:03:11 Z faustaadp Chase (CEOI17_chase) C++17
40 / 100
 1477 ms 17788 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[1010][110];
void dfs(ll aa,ll bb,ll cc,ll dd)
{
	ll tam=x[aa]-a[bb];	
	has=max(has,cc);
	ll ii;
	for(ii=0;ii<v[aa].size();ii++)
	{
		if(v[aa][ii]==bb)continue;
		if(dd)
			dfs(v[aa][ii],aa,cc+tam,dd-1);
		dfs(v[aa][ii],aa,cc,dd);
	}
}
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));
	}
	cout<<has<<"\n";
}

Compilation message

chase.cpp: In function 'void dfs(ll, ll, ll, ll)':
chase.cpp:16:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(ii=0;ii<v[aa].size();ii++)
           ~~^~~~~~~~~~~~~
chase.cpp: In function 'll depe(ll, ll, ll)':
chase.cpp:30:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ii=0;ii<v[aa].size();ii++)
            ~~^~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3576 KB Output is correct
2 Correct 5 ms 3548 KB Output is correct
3 Correct 5 ms 3576 KB Output is correct
4 Correct 5 ms 3576 KB Output is correct
5 Correct 7 ms 3576 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3576 KB Output is correct
2 Correct 5 ms 3548 KB Output is correct
3 Correct 5 ms 3576 KB Output is correct
4 Correct 5 ms 3576 KB Output is correct
5 Correct 7 ms 3576 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 1477 ms 3728 KB Output is correct
8 Correct 160 ms 3740 KB Output is correct
9 Correct 82 ms 3736 KB Output is correct
10 Correct 304 ms 3832 KB Output is correct
11 Correct 305 ms 3740 KB Output is correct
12 Correct 267 ms 3704 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 72 ms 17788 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 3576 KB Output is correct
2 Correct 5 ms 3548 KB Output is correct
3 Correct 5 ms 3576 KB Output is correct
4 Correct 5 ms 3576 KB Output is correct
5 Correct 7 ms 3576 KB Output is correct
6 Correct 5 ms 3576 KB Output is correct
7 Correct 1477 ms 3728 KB Output is correct
8 Correct 160 ms 3740 KB Output is correct
9 Correct 82 ms 3736 KB Output is correct
10 Correct 304 ms 3832 KB Output is correct
11 Correct 305 ms 3740 KB Output is correct
12 Correct 267 ms 3704 KB Output is correct
13 Runtime error 72 ms 17788 KB Execution killed with signal 11 (could be triggered by violating memory limits)
14 Halted 0 ms 0 KB -