Submission #931041

#	Time	Username	Problem	Language	Result	Execution time	Memory
931041		tamir1	Cyberland (APIO23_cyberland)	C++17	5 / 100	22 ms	4488 KiB

cyberland

#include "cyberland.h"
#include <bits/stdc++.h>
#include <vector>
#define ff first
#define ss second
using namespace std;
double ans1,ans2,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[a]==0) dfs(i.ff,i.ss,k);
		if(ar[a]==1) dfs(i.ff,dist+i.ss,k);
		if(ar[a]==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) {
	if(N==2){
		if(M>0) return c[0];
		else return -1;
	}
	if(N==3){
		bool p=false,q=false;
		int d;
		for(int i=0;i<M;i++){
			if((x[i]==0 && y[i]==H) || (x[i]==H && y[i]==0)){
				p=true;
				ans1=c[i];
			}
			else if(x[i]==0 || y[i]==0){
				if(x[i]==0) d=y[i];
				else d=x[i];
				if(arr[d]==0) ans2=0;
				else if(arr[d]==1 || (arr[d]==2 && K<1)) ans2=c[i];
				else ans2=(double)c[i]/2;
				for(int j=0;j<M;j++){
					if((x[j]==d && y[j]==H) || (x[j]==H && y[j]==d)){
						q=true;
						ans2+=c[j];
					}
				}
			}
		}
		if(!p && !q) return -1;
		if(!p) return ans2;
		if(!q) return ans1;
		return min(ans1,ans2);
	}
    return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 13
• Subtask 4: 0 / 19
• Subtask 5: 0 / 7
• Subtask 6: 0 / 16
• Subtask 7: 0 / 29
• Subtask 8: 0 / 3