Submission #133704

#	Time	Username	Problem	Language	Result	Execution time	Memory
133704		Boxworld	Crocodile's Underground City (IOI11_crocodile)	C++14	100 / 100	729 ms	61348 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> Pa;
const int maxN=100100;
struct edge{int v,d,nxt;}a[20*maxN];
int vis[maxN],head[maxN];
int cnt=0;
priority_queue<Pa,vector<Pa>,greater<Pa> > Q;
void add(int u,int v,int d){
	a[cnt].v=v;
	a[cnt].d=d;
	a[cnt].nxt=head[u];
	head[u]=cnt++;
}
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
	for (int i=0;i<N;i++){vis[i]=0;head[i]=-1;}
	for (int i=0;i<M;i++){
		add(R[i][0],R[i][1],L[i]);
		add(R[i][1],R[i][0],L[i]);
	}
	for (int i=0;i<K;i++){
		Q.push(make_pair(0,P[i]));
		vis[P[i]]=1;
	}
	while(!Q.empty()){
		int dis=Q.top().first,u=Q.top().second;Q.pop();
		if (++vis[u]!=2)continue;
		if (u==0)return dis;
		for (int i=head[u];i!=-1;i=a[i].nxt)Q.push(make_pair(dis+a[i].d,a[i].v));
	}
}


 

Compilation message (stderr)

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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