Submission #941252

#	Time	Username	Problem	Language	Result	Execution time	Memory
941252		WanWan	Beech Tree (IOI23_beechtree)	C++17	5 / 100	59 ms	6996 KiB

beechtree

#include "beechtree.h"
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
void debug_out() {cerr<<endl;}
template <typename Head, typename... Tail>
void debug_out(Head _H, Tail... _T) {cerr<<" "<<to_string(_H);debug_out(_T...);}
#define debug(...) cerr<<"["<<#__VA_ARGS__<<"]:",debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif
const int MAXN = 2005;
const int inf=1000000500ll;
const long long oo =1000000000000000500ll;
const int MOD = (int)1e9+7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair<int,int> pi; 
int par[MAXN];
vector<int>childs[MAXN];
int st[MAXN],en[MAXN];
int TIME;
bool child(int par, int child){
    if(st[par]<=st[child] && en[par]>=en[child])return 1;
    return 0;
}
void dfs(int x, int p){
    st[x]=TIME++;
    par[x]=p;
    for(auto v:childs[x]){
        dfs(v,x);
    }
    en[x]=TIME-1;
}
std::vector<int> beechtree(int n, int M, std::vector<int> P, std::vector<int> C)
{
    vector<int>res(n,0);
    int lst=n;
    set<int>s;
    for(int i=n-1;i>=0;i--){
       if(i) s.insert(C[i]);
       if(s.size() == 1)lst=i;
       else break;
    }
    for(int i=0;i<n;i++){
        if(i<lst-1)res[i]=0;
        else res[i]=1;
    }
    return res;
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 9
• Subtask 2: 5 / 5
• Subtask 3: 0 / 9
• Subtask 4: 0 / 8
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
• Subtask 7: 0 / 12
• Subtask 8: 0 / 17
• Subtask 9: 0 / 12