제출 #82415

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
82415		farukkastamonuda	페리들 (NOI13_ferries)	C++14	17 / 40	338 ms	33792 KiB

ferries

#include <bits/stdc++.h>
#define fi first
#define se second
#define lo long long 
#define inf 1000000009
#define md 1000000007
#define li 100005
#define mp make_pair
#define pb push_back
#define mid (start+end)/2
using namespace std;
int n,m,x,y,z,d[li];
vector<int> v[li],t[li];
void bfs(){
	for(int i=1;i<n;i++) d[i]=inf;
	priority_queue< pair<int,int> > q;
	q.push(mp(0,n));
	while(!q.empty()){
		pair<int,int> temp=q.top();
		q.pop();
		int cst=-temp.fi;
		int seh=temp.se;
		if(d[seh]!=cst) continue;
		if(seh==1){
			printf("%d\n",cst);
			exit(0);
		}
		for(int i=0;i<(int)v[seh].size();i++){
			int ata=v[seh][i];
			if((int)t[ata].size()>0){
				int knr=t[ata].back();
				t[ata].pop_back();
				if(d[ata]>d[seh]+knr){
					d[ata]=d[seh]+knr;
					q.push(mp(-d[ata],ata));
				}
			}
		}
	}
}
int main(){
	scanf("%d %d",&n,&m);
	for(int i=1;i<=m;i++){
		scanf("%d %d %d",&x,&y,&z);
		v[y].pb(x);
		t[x].pb(z);
	}
	for(int i=1;i<=n;i++){
		sort(t[i].begin(),t[i].end());
	}
	bfs();
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

ferries.cpp: In function 'int main()':
ferries.cpp:42:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
ferries.cpp:44:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d",&x,&y,&z);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 10 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12