제출 #265362

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
265362		T0p_	Sightseeing (NOI14_sightseeing)	C++14	15 / 25	3566 ms	202684 KiB

sightseeing

#include<bits/stdc++.h>
using namespace std;

#define pb push_back

struct DATA
{
	int node, val;
	bool operator < (const DATA & o) const
	{
		return val < o.val;
	}	
};

int ans[500500];
priority_queue<DATA> heap;
vector<DATA> g[500500];

int main()
{
	int n, m, q;
	scanf(" %d %d %d",&n,&m,&q);
	while(m--)
	{
		int u, v, w;
		scanf(" %d %d %d",&u,&v,&w);
		g[u].pb({v, w}), g[v].pb({u, w});
	}
	heap.push({1, 1000000000});
	while(!heap.empty())
	{
		int nown = heap.top().node;
		int nowv = heap.top().val;
		heap.pop();
		for(auto x : g[nown])
		{
			int vv = min(nowv, x.val);
			if(vv > ans[x.node])
			{
				ans[x.node] = vv;
				heap.push({x.node, ans[x.node]});
			}
		}
	}
	while(q--)
	{
		int d;
		scanf(" %d",&d);
		printf("%d\n",ans[d]);
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

sightseeing.cpp: In function 'int main()':
sightseeing.cpp:22:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |  scanf(" %d %d %d",&n,&m,&q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sightseeing.cpp:26:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |   scanf(" %d %d %d",&u,&v,&w);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~
sightseeing.cpp:48:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   48 |   scanf(" %d",&d);
      |   ~~~~~^~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 5 / 5
• Subtask 3: 6 / 6
• Subtask 4: 0 / 10