Submission #599542

#	Time	Username	Problem	Language	Result	Execution time	Memory
599542		shezitt	Crocodile's Underground City (IOI11_crocodile)	C++14	46 / 100	133 ms	262144 KiB

crocodile

#include "crocodile.h"
#include <bits/stdc++.h>
#define dbg(x) cout << #x << ": " << x << endl;
#define raya cout << "===========================" << endl;

using namespace std;

const int N = 1e5+5;
int n, m;
bool ext[N];

vector<pair<int,int>> g[N];

int f(int i, int p=-1){
	if((int) g[i].size() == 1){
		if(ext[i]){
			return 0;
		}
		return 1e9;
	}
	priority_queue<int> st;
	for(auto v : g[i]){
		if(v.first != p){
			st.push(-(f(v.first, i)+v.second));
		}
	}
	st.pop();
	return -st.top();
}

int travel_plan(int nn, int mm, int R[][2], int L[], int K, int P[]){
	n = nn;
	m = mm;
	for(int i=0; i<K; ++i){
		ext[P[i]] = 1;
	}
	for(int i=0; i<m; ++i){
		g[R[i][0]].push_back({R[i][1], L[i]});
		g[R[i][1]].push_back({R[i][0], L[i]});
	}
	return f(0);
}

• Subtask 1: 46 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11