Submission #849342

#	Time	Username	Problem	Language	Result	Execution time	Memory
849342		Mr_Ph	Tropical Garden (IOI11_garden)	C++14	49 / 100	5063 ms	4188 KiB

garden

#include "garden.h"
#include "gardenlib.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
vector<vector<int>>adj;
bool valid=false;
void dfs(int node,int prv,int k,int p)
{
    if(k==0)
    {
        valid=(node==p);
        return;
    }
    if(adj[node].size()==1)
        dfs(adj[node][0],node,k-1,p);
    else
    {
        if(prv==adj[node][0])
            dfs(adj[node][1],node,k-1,p);
        else
            dfs(adj[node][0],node,k-1,p);
    }
}
void count_routes(int n, int m, int p, int r[][2], int q, int g[])
{
    adj.resize(n+1);
    for(int i=0; i<m; i++)
    {
        adj[r[i][0]].push_back(r[i][1]);
        adj[r[i][1]].push_back(r[i][0]);
    }
    int ans=0;
    for(int i=0;i<n;i++)
    {
        valid=false;
        dfs(i,-1,g[0],p);
        ans+=valid;
    }
    answer(ans);
}

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