제출 #931013

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
931013		tamir1	사이버랜드 (APIO23_cyberland)	C++17	0 / 100	3067 ms	9480 KiB

cyberland

#include "cyberland.h"
#include <bits/stdc++.h>
#include <vector>
#define ff first
#define ss second
using namespace std;
double ans;
vector<pair<int,int>> v[100010];
vector<int> ar;
bitset<100001> vis;
int h;
void dfs(int a,double dist,int k){
	if(vis[a]) return;
	vis[a]=1;
	if(a==h){
		ans=min(ans,dist);
		return;
	}
	for(pair<int,int> i:v[a]){
		if(ar[i.ff]==0) dfs(i.ff,0,k);
		if(ar[i.ff]==1) dfs(i.ff,dist+i.ss,k);
		if(ar[i.ff]==2){
			dfs(i.ff,dist+i.ss,k);
			if(k>0) dfs(i.ff,dist/2+i.ss,k-1);
		}
	}
	vis[a]=0;
}
double solve(int N, int M, int K, int H, std::vector<int> x, std::vector<int> y, std::vector<int> c, std::vector<int> arr) {
	for(int i=0;i<M;i++){
		v[x[i]].push_back({y[i],c[i]});
		v[y[i]].push_back({x[i],c[i]});
	}
	h=H;
	ar=arr;
	ans=10000;
	dfs(0,0,K);
    if(ans==1e18) return -1;
    return ans;
}

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• Subtask 2: 0 / 8
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• Subtask 8: 0 / 3