제출 #347555

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
347555		tengiz05	열대 식물원 (Tropical Garden) (IOI11_garden)	C++17	49 / 100	5093 ms	36076 KiB

garden

#include "garden.h"
#include "gardenlib.h"
//~ #include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N_ = 150005;
int ans, n, m, target;
vector<int> edges[N_];
int d;
void dfs(int u,int p=-1){
	if(d<0)return;
	//~ cout << u << ' ';
	if(d == 0){
		if(u == target){
			ans++;
		}d--;
		return;
	}d--;
	if(d<0)return;
	if(edges[u].size() > 1){
		if(edges[u][0] != p){
			dfs(edges[u][0],u);
		}else {
			dfs(edges[u][1],u);
		}
	}else if(p == -1 && edges[u].size())dfs(edges[u][0],u);
	if(d<0)return;
	if(p!=-1)dfs(p,u);
	return;
}
void count_routes(int N, int M, int P, int R[][2], int Q, int G[]){
	target = P;
	n = N, m = M;
	for(int i=0;i<m;i++){
		edges[R[i][0]].pb(R[i][1]);
		edges[R[i][1]].pb(R[i][0]);
	}
	for(int i=0;i<Q;i++){
		ans=0;
		for(int j=0;j<n;j++){
			d = G[i];
			//~ cout << "dfsing " << j << ":  ";
			dfs(j);
			//~ cout<<'\n';
		}answer(ans);
	}return;
}

• Subtask 1: 49 / 49
• Subtask 2: 0 / 20
• Subtask 3: 0 / 31