oj.uz

Submission #44542

# Submission time Handle Problem Language Result Execution time Memory
44542 2018-04-03T04:29:07 Z zetapi Sightseeing (NOI14_sightseeing) C++14
15 / 25
 3500 ms 206152 KB 
/*
     Contest  :
     Task    :
*/
 
#include <bits/stdc++.h>
using namespace std;
 
#define pb  push_back
#define mp  make_pair
#define ll  long long
#define F   first
#define S   second
#define itr ::iterator 
 
typedef pair<int,int> pii;
 
const int MAX=6e5+99;
 
set<pii> vec[MAX];
 
int V,E,Q,X,Y,Z,res[MAX];
 
void dijkstra()
{
	int tem;
	pii cur;
	set<pii> pq;
	set<pii> ::iterator it;
	pq.insert(mp(MAX,1));
	res[1]=MAX;
	while(! pq.empty())
	{
		cur=*pq.rbegin();
		it=pq.end();
		it--;
		pq.erase(it);
		for(auto A:vec[cur.second])
		{
			tem=min(cur.first,A.second);
			if(tem>res[A.first])
			{
				if(res[A.first])
				pq.erase(pq.find(mp(res[A.first],A.first)));
				res[A.first]=tem;
				pq.insert(mp(res[A.first],A.first));
			}
		}
		for(auto A:vec[cur.second])
		vec[A.first].erase(vec[A.first].find(mp(cur.second,A.second)));
		vec[cur.second].clear();
	}
	return ;
}
 
signed main()
{
	//ios_base::sync_with_stdio(false);
	/*cin.tie(0);
	cout.tie(0);*/
	
	//cin>>V>>E>>Q;
	scanf("%d %d %d",&V,&E,&Q);
	while(E--)
	{
		scanf("%d %d %d",&X,&Y,&Z);
		vec[X].insert(mp(Y,Z));
		vec[Y].insert(mp(X,Z));
	}
	dijkstra();
	while(Q--)
	{
		scanf("%d",&X);
		printf("%d\n",res[X]);
	}
    return 0;
}

Compilation message

sightseeing.cpp: In function 'int main()':
sightseeing.cpp:63:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d",&V,&E,&Q);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
sightseeing.cpp:66:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d",&X,&Y,&Z);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~
sightseeing.cpp:73:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&X);
   ~~~~~^~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 28536 KB Output is correct
2 Correct 29 ms 28648 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 28980 KB Output is correct
2 Correct 27 ms 28980 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 126 ms 33640 KB Output is correct
2 Correct 97 ms 33640 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3554 ms 206152 KB Time limit exceeded
2 Halted 0 ms 0 KB -