Submission #64723

#	Time	Username	Problem	Language	Result	Execution time	Memory
64723		zetapi	Crocodile's Underground City (IOI11_crocodile)	C++14	89 / 100	1053 ms	108980 KiB

crocodile

#include <crocodile.h>
 
#include <bits/stdc++.h>
using namespace std;
 
#define pb  push_back
#define mp  make_pair
#define ll 	long long
#define itr ::iterator 
 
typedef pair<ll,ll>  pii;
 
const ll MAX=1e6;
const ll INF=1e14;
 
vector<pii> vec[MAX];
 
ll mark[MAX],dp[MAX],mn[MAX];
 
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{	
	for(int A=0;A<M;A++)
	{
		vec[R[A][0]].pb(mp(R[A][1],L[A]));
		vec[R[A][1]].pb(mp(R[A][0],L[A]));
	}
	for(int A=0;A<N;A++)
	{
		mn[A]=-1;
		dp[A]=-1;
	}
	priority_queue<pii,vector<pii>,greater<pii>> pq;
	for(int A=0;A<K;A++)
	{
		dp[P[A]]=0;
		mn[P[A]]=0;
		pq.push(mp(0,P[A]));
	}
	while(!pq.empty())
	{
		pii cur=pq.top();
		pq.pop();
		if(cur.first>dp[cur.second])
			continue;
		for(auto A:vec[cur.second])
		{
			if(dp[A.first]==-1)
			{
				dp[A.first]=INF;
				mn[A.first]=cur.first+A.second;
			}
			else if(cur.first+A.second<dp[A.first])
			{
				dp[A.first]=cur.first+A.second;
				if(dp[A.first]<mn[A.first])			
					swap(dp[A.first],mn[A.first]);
				pq.push(mp(dp[A.first],A.first));
			}			
		}
	}
	assert(dp[0]<INF);
	return (int)dp[0];
}
 
/*signed main()
{
	ios_base::sync_with_stdio(false);
 
	int R[][2]={{0,2},{0,3},{3,2},{2,1},{0,1},{0,4},{3,4}};
	int L[]={4,3,2,10,100,7,9};
	int P[]={1,3};
	cout<<travel_plan(5,7,R,L,2,P);
	return 0;
}*/

• Subtask 1: 46 / 46
• Subtask 2: 43 / 43
• Subtask 3: 0 / 11