Submission #511427

#	Time	Username	Problem	Language	Result	Execution time	Memory
511427		AdamGS	악어의 지하 도시 (IOI11_crocodile)	C++14	100 / 100	478 ms	98416 KiB

crocodile

#include "crocodile.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1e5+7, INF=1e9+7;
vector<pair<int,ll>>V[LIM];
ll mi[LIM], odw[LIM];
int travel_plan(int n, int m, int R[][2], int L[], int k, int P[]) {
	rep(i, n) mi[i]=INF;
	rep(i, m) {
		V[R[i][0]].pb({R[i][1], L[i]});
		V[R[i][1]].pb({R[i][0], L[i]});
	}
	priority_queue<pair<ll,int>>q;
	rep(i, k) q.push({0, P[i]});
	while(!q.empty()) {
		ll o=-q.top().st, a=q.top().nd; q.pop();
		if(odw[a]) continue;
		odw[a]=1;
		if(!a) return o;
		for(auto i : V[a]) {
			if(o+i.nd<=mi[i.st]) {
				if(mi[i.st]!=INF) q.push({-mi[i.st], i.st});
				mi[i.st]=o+i.nd;
			} else {
				q.push({-o-i.nd, i.st});
			}
		}
	}
}

Compilation message (stderr)

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:20:30: warning: control reaches end of non-void function [-Wreturn-type]
   20 |  priority_queue<pair<ll,int>>q;
      |                              ^

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