oj.uz

Submission #259379

# Submission time Handle Problem Language Result Execution time Memory
259379 2020-08-07T17:19:29 Z uacoder123 Dreaming (IOI13_dreaming) C++14
32 / 100
 92 ms 14204 KB 
#include <bits/stdc++.h>
#include "dreaming.h"
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))

typedef int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;

int n,m,l,ans=0,vis[100001],co=0,ans1=0;
vector<iii> al[100001];
vi v;
int dfs(int node,int p)
{
	vis[node]=1;
	co++;
	for(int i=0;i<al[node].size();++i)
	{
		if(!vis[al[node][i].S.F])
		{
			al[node][i].F=dfs(al[node][i].S.F,node);
			al[node][i].F+=al[node][i].S.S;
		}
	}
	sort(all(al[node]));
	if(al[node].size()>1)
		ans1=max(ans1,al[node].back().F+al[node][al[node].size()-2].F);
	else
		ans1=max(ans1,al[node].back().F);
	return(al[node].back().F);
}
void dfs2(int node,int p)
{
	sort(all(al[node]));
	int to=al[node].back().S.F;
	ans=min(ans,al[node].back().F);
	if(to==p)
		return;
	for(int i=0;i<al[to].size();++i)
	{
		if(al[to][i].S.F==node)
		{
			al[to][i].F=al[node][al[node].size()-2].F+al[to][i].S.S;
			break;
		}
	}
	dfs2(to,node);
}
int travelTime(int N, int M, int L, int A[], int B[], int T[]) 
{
	n=N;
	m=M;
	l=L;
	for(int i=0;i<m;++i)
	{
		al[A[i]].pb(mp(0,mp(B[i],T[i])));
		al[B[i]].pb(mp(0,mp(A[i],T[i])));
		co+=T[i];
	}
	for(int i=0;i<n;++i)
	{
		if(al[i].size()>2)
			exit(0);
		al[i].pb(mp(0,mp(i,i)));
	}
	for(int i=0;i<n;++i)
	{
		if(!vis[i]) 
		{
			dfs(i,i);
			ans=1000000000;
			dfs2(i,i);
			v.pb(ans);
		}
	}
	sort(all(v));
	ans=v.back();
	if(v.size()>1)
		ans=v.back()+v[v.size()-2]+l;
	if(v.size()>2)
		ans=max(ans,2*l+v[v.size()-2]+v[v.size()-3]);
	ans1=max(ans1,ans);
	return(ans1);
}

Compilation message

dreaming.cpp: In function 'int dfs(int, int)':
dreaming.cpp:26:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<al[node].size();++i)
              ~^~~~~~~~~~~~~~~~
dreaming.cpp: In function 'void dfs2(int, int)':
dreaming.cpp:48:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<al[to].size();++i)
              ~^~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 14204 KB Output is correct
2 Correct 84 ms 13816 KB Output is correct
3 Correct 56 ms 11640 KB Output is correct
4 Correct 11 ms 4352 KB Output is correct
5 Correct 8 ms 3712 KB Output is correct
6 Correct 16 ms 5248 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 37 ms 7552 KB Output is correct
9 Correct 45 ms 9848 KB Output is correct
10 Correct 2 ms 2816 KB Output is correct
11 Correct 64 ms 11200 KB Output is correct
12 Correct 71 ms 12536 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 14204 KB Output is correct
2 Correct 84 ms 13816 KB Output is correct
3 Correct 56 ms 11640 KB Output is correct
4 Correct 11 ms 4352 KB Output is correct
5 Correct 8 ms 3712 KB Output is correct
6 Correct 16 ms 5248 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 37 ms 7552 KB Output is correct
9 Correct 45 ms 9848 KB Output is correct
10 Correct 2 ms 2816 KB Output is correct
11 Correct 64 ms 11200 KB Output is correct
12 Correct 71 ms 12536 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Incorrect 2 ms 2688 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 14204 KB Output is correct
2 Correct 84 ms 13816 KB Output is correct
3 Correct 56 ms 11640 KB Output is correct
4 Correct 11 ms 4352 KB Output is correct
5 Correct 8 ms 3712 KB Output is correct
6 Correct 16 ms 5248 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 37 ms 7552 KB Output is correct
9 Correct 45 ms 9848 KB Output is correct
10 Correct 2 ms 2816 KB Output is correct
11 Correct 64 ms 11200 KB Output is correct
12 Correct 71 ms 12536 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Incorrect 2 ms 2688 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 6784 KB Output is correct
2 Correct 39 ms 7160 KB Output is correct
3 Correct 40 ms 7160 KB Output is correct
4 Correct 41 ms 7160 KB Output is correct
5 Correct 38 ms 7160 KB Output is correct
6 Correct 58 ms 7672 KB Output is correct
7 Correct 34 ms 7284 KB Output is correct
8 Correct 33 ms 7032 KB Output is correct
9 Correct 39 ms 7160 KB Output is correct
10 Correct 34 ms 7288 KB Output is correct
11 Correct 2 ms 2688 KB Output is correct
12 Correct 13 ms 6912 KB Output is correct
13 Correct 13 ms 6912 KB Output is correct
14 Correct 14 ms 6784 KB Output is correct
15 Correct 13 ms 6784 KB Output is correct
16 Correct 13 ms 6896 KB Output is correct
17 Correct 13 ms 6784 KB Output is correct
18 Correct 13 ms 6912 KB Output is correct
19 Correct 13 ms 6784 KB Output is correct
20 Correct 2 ms 2688 KB Output is correct
21 Correct 2 ms 2688 KB Output is correct
22 Correct 2 ms 2816 KB Output is correct
23 Correct 13 ms 6912 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 14204 KB Output is correct
2 Correct 84 ms 13816 KB Output is correct
3 Correct 56 ms 11640 KB Output is correct
4 Correct 11 ms 4352 KB Output is correct
5 Correct 8 ms 3712 KB Output is correct
6 Correct 16 ms 5248 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 37 ms 7552 KB Output is correct
9 Correct 45 ms 9848 KB Output is correct
10 Correct 2 ms 2816 KB Output is correct
11 Correct 64 ms 11200 KB Output is correct
12 Correct 71 ms 12536 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Incorrect 2 ms 2688 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 92 ms 14204 KB Output is correct
2 Correct 84 ms 13816 KB Output is correct
3 Correct 56 ms 11640 KB Output is correct
4 Correct 11 ms 4352 KB Output is correct
5 Correct 8 ms 3712 KB Output is correct
6 Correct 16 ms 5248 KB Output is correct
7 Correct 2 ms 2688 KB Output is correct
8 Correct 37 ms 7552 KB Output is correct
9 Correct 45 ms 9848 KB Output is correct
10 Correct 2 ms 2816 KB Output is correct
11 Correct 64 ms 11200 KB Output is correct
12 Correct 71 ms 12536 KB Output is correct
13 Correct 2 ms 2816 KB Output is correct
14 Incorrect 2 ms 2688 KB Output isn't correct
15 Halted 0 ms 0 KB -