Submission #563157

#	Time	Username	Problem	Language	Result	Execution time	Memory
563157		Aktan	Swapping Cities (APIO20_swap)	C++14	6 / 100	144 ms	20836 KiB

swap

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

#ifndef EVAL
#include "grader.cpp"
#endif

vector<int> e[100005];
int used[100005],mx=0;
int ans=0;
void dfs(int x,int p){
	if(e[x].size()==1){
		ans=-1;
		return;
	}
	if(ans==-1){
		return;
	}
	used[x]++;
	for(auto w : e[x]){
		if(used[w]==0){
			dfs(w,x);
		}
	}
}
void init(int N, int M, vector<int> U, vector<int> V, vector<int> W){
	for(int i=0;i<M;i++){
		e[U[i]].push_back(V[i]);
		e[V[i]].push_back(U[i]);
		mx=max(mx,W[i]);
	}
	dfs(0,-1);
}

int getMinimumFuelCapacity(int X, int Y) {
	if(ans==-1){
		return -1;
	}
	else{
		return mx;
	}
}

• Subtask 1: 6 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 23
• Subtask 6: 0 / 27