oj.uz

Submission #96166

# Submission time Handle Problem Language Result Execution time Memory
96166 2019-02-06T15:06:00 Z gumball Commuter Pass (JOI18_commuter_pass) C++14
100 / 100
 764 ms 38960 KB 
#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
ll n,m,S,T,U,V,i,dis[101010][6],ta,tb,tc,b[101010][6],j,d[101010][2],has;
vector<ll> v[101010],w[101010],x[101010];
void djik(ll aa,ll bb)
{
	priority_queue<pair<ll,pair<ll,ll> > > pq;
	ll ii;
	for(ii=1;ii<=n;ii++)dis[ii][bb]=1e18;
	dis[aa][bb]=0;
	pq.push(mp(0,mp(aa,-1)));
	while(!pq.empty())
	{
		ll jar=-pq.top().fi;
		ll u=pq.top().se.fi;
		ll par=pq.top().se.se;
		pq.pop();
		if(b[u][bb])continue;
		b[u][bb]=1;
		for(ii=0;ii<v[u].size();ii++)
		{
			ll nx=v[u][ii];
			if(dis[nx][bb]>=(jar+w[u][ii]))
			{
				dis[nx][bb]=jar+w[u][ii];
				pq.push(mp(-jar-w[u][ii],mp(nx,u)));
			}
		}
	}
}
ll depe(ll aa,ll bb)
{
	if(d[aa][bb]==-1)
	{
		if(bb==0)
			d[aa][bb]=dis[aa][2];
		else
			d[aa][bb]=dis[aa][3];
		ll ii;
		for(ii=0;ii<x[aa].size();ii++)
			d[aa][bb]=min(d[aa][bb],depe(x[aa][ii],bb));
	}
	return d[aa][bb];
}
int main()
{
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	cin>>n>>m;
	cin>>S>>T;
	cin>>U>>V;
	for(i=1;i<=m;i++)
	{
		cin>>ta>>tb>>tc;
		v[ta].pb(tb);
		v[tb].pb(ta);
		w[ta].pb(tc);
		w[tb].pb(tc);
	}
	djik(S,0);
	djik(T,1);
	djik(U,2);
	djik(V,3);
	for(i=1;i<=n;i++)
	{
		for(j=0;j<v[i].size();j++)
		{
			if((dis[i][0]+w[i][j]+dis[v[i][j]][1])==dis[T][0])
			{
			//	cout<<i<<" "<<v[i][j]<<"\n";
				x[v[i][j]].pb(i);
			}
		}
	}
	has=1e18;
	memset(d,-1,sizeof(d));
	for(i=1;i<=n;i++)
	{
		//cout<<i<<" "<<depe(i,0)<<" "<<depe(i,1)<<"\n";
		has=min(has,depe(i,0)+dis[i][3]);
		has=min(has,depe(i,1)+dis[i][2]);
	}
	cout<<has<<"\n";
	//for(i=1;i<=n;i++)cout<<i<<" S="<<dis[i][2]<<" T="<<dis[i][3]<<"\n";
}

Compilation message

commuter_pass.cpp: In function 'void djik(long long int, long long int)':
commuter_pass.cpp:25:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ii=0;ii<v[u].size();ii++)
            ~~^~~~~~~~~~~~
commuter_pass.cpp:21:6: warning: unused variable 'par' [-Wunused-variable]
   ll par=pq.top().se.se;
      ^~~
commuter_pass.cpp: In function 'long long int depe(long long int, long long int)':
commuter_pass.cpp:45:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ii=0;ii<x[aa].size();ii++)
            ~~^~~~~~~~~~~~~
commuter_pass.cpp: In function 'int main()':
commuter_pass.cpp:70:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(j=0;j<v[i].size();j++)
           ~^~~~~~~~~~~~

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 653 ms 37976 KB Output is correct
2 Correct 676 ms 35740 KB Output is correct
3 Correct 685 ms 38960 KB Output is correct
4 Correct 638 ms 38136 KB Output is correct
5 Correct 595 ms 35404 KB Output is correct
6 Correct 623 ms 38180 KB Output is correct
7 Correct 656 ms 35764 KB Output is correct
8 Correct 565 ms 35712 KB Output is correct
9 Correct 522 ms 36476 KB Output is correct
10 Correct 502 ms 36968 KB Output is correct
11 Correct 270 ms 28920 KB Output is correct
12 Correct 540 ms 36312 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 562 ms 36088 KB Output is correct
2 Correct 577 ms 35652 KB Output is correct
3 Correct 666 ms 35712 KB Output is correct
4 Correct 649 ms 36252 KB Output is correct
5 Correct 715 ms 35920 KB Output is correct
6 Correct 630 ms 37844 KB Output is correct
7 Correct 764 ms 36520 KB Output is correct
8 Correct 682 ms 35560 KB Output is correct
9 Correct 699 ms 35920 KB Output is correct
10 Correct 706 ms 35556 KB Output is correct
11 Correct 294 ms 31336 KB Output is correct
12 Correct 561 ms 37864 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 10840 KB Output is correct
2 Correct 8 ms 9208 KB Output is correct
3 Correct 8 ms 9208 KB Output is correct
4 Correct 61 ms 12536 KB Output is correct
5 Correct 18 ms 10872 KB Output is correct
6 Correct 10 ms 9208 KB Output is correct
7 Correct 12 ms 9336 KB Output is correct
8 Correct 11 ms 9336 KB Output is correct
9 Correct 10 ms 9208 KB Output is correct
10 Correct 23 ms 10920 KB Output is correct
11 Correct 9 ms 9080 KB Output is correct
12 Correct 12 ms 9080 KB Output is correct
13 Correct 10 ms 9080 KB Output is correct
14 Correct 9 ms 9212 KB Output is correct
15 Correct 13 ms 9208 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 653 ms 37976 KB Output is correct
2 Correct 676 ms 35740 KB Output is correct
3 Correct 685 ms 38960 KB Output is correct
4 Correct 638 ms 38136 KB Output is correct
5 Correct 595 ms 35404 KB Output is correct
6 Correct 623 ms 38180 KB Output is correct
7 Correct 656 ms 35764 KB Output is correct
8 Correct 565 ms 35712 KB Output is correct
9 Correct 522 ms 36476 KB Output is correct
10 Correct 502 ms 36968 KB Output is correct
11 Correct 270 ms 28920 KB Output is correct
12 Correct 540 ms 36312 KB Output is correct
13 Correct 562 ms 36088 KB Output is correct
14 Correct 577 ms 35652 KB Output is correct
15 Correct 666 ms 35712 KB Output is correct
16 Correct 649 ms 36252 KB Output is correct
17 Correct 715 ms 35920 KB Output is correct
18 Correct 630 ms 37844 KB Output is correct
19 Correct 764 ms 36520 KB Output is correct
20 Correct 682 ms 35560 KB Output is correct
21 Correct 699 ms 35920 KB Output is correct
22 Correct 706 ms 35556 KB Output is correct
23 Correct 294 ms 31336 KB Output is correct
24 Correct 561 ms 37864 KB Output is correct
25 Correct 35 ms 10840 KB Output is correct
26 Correct 8 ms 9208 KB Output is correct
27 Correct 8 ms 9208 KB Output is correct
28 Correct 61 ms 12536 KB Output is correct
29 Correct 18 ms 10872 KB Output is correct
30 Correct 10 ms 9208 KB Output is correct
31 Correct 12 ms 9336 KB Output is correct
32 Correct 11 ms 9336 KB Output is correct
33 Correct 10 ms 9208 KB Output is correct
34 Correct 23 ms 10920 KB Output is correct
35 Correct 9 ms 9080 KB Output is correct
36 Correct 12 ms 9080 KB Output is correct
37 Correct 10 ms 9080 KB Output is correct
38 Correct 9 ms 9212 KB Output is correct
39 Correct 13 ms 9208 KB Output is correct
40 Correct 585 ms 38132 KB Output is correct
41 Correct 648 ms 36532 KB Output is correct
42 Correct 575 ms 36324 KB Output is correct
43 Correct 330 ms 31800 KB Output is correct
44 Correct 365 ms 32248 KB Output is correct
45 Correct 727 ms 37276 KB Output is correct
46 Correct 679 ms 36984 KB Output is correct
47 Correct 565 ms 37956 KB Output is correct
48 Correct 306 ms 30072 KB Output is correct
49 Correct 598 ms 38120 KB Output is correct
50 Correct 660 ms 36332 KB Output is correct
51 Correct 667 ms 37212 KB Output is correct