Submission #303292

#	Time	Username	Problem	Language	Result	Execution time	Memory
303292		Vimmer	Comparing Plants (IOI20_plants)	C++14	0 / 100	23 ms	28544 KiB

plants

#include <bits/stdc++.h>
#include "plants.h"
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

#define N 200005
#define PB push_back
#define sz(x) int(x.size())
#define P 31
#define F first
#define M ll(1e9 + 7)
#define S second
#define all(x) x.begin(), x.end()
#define endl '\n'

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;

//typedef tree<int, null_type, less_equal <int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

ll mlt(ll a, ll b) {return (a * b) % M;}
ll sm(ll a, ll b) {return (a + b) % M;}

int K, h[N], glob;

vector <int> gr;

set <int> g[N], se, st[N], ht[N];

void dfs(int v)
{
    st[v].insert(glob);

    ht[v].insert(h[v]);

    for (auto it : g[v])
    {
        h[it] = h[v] + 1;

        dfs(it);
    }
}

void init(int k, vector<int> r)
{
    gr = r;

    K = k;

    if (K == 2)
    {
        for (int i = 0; i < sz(r); i++) se.insert(i);

        for (int i = 0; i < sz(r); i++)
        {
            int nxt = (i + 1) % sz(r);

            if (r[i] == 1) {g[nxt].insert(i); se.erase(i);}
              else {g[i].insert(nxt);se.erase(nxt);}
        }

        for (auto it : se) {glob = it; dfs(it);}
    }

	return;
}

int compare_plants(int x, int y)
{
    bool f = 1;

    for (auto it : st[x]) if (st[y].find(it) != st[y].end()) f = 0;

    if (f) return 0;

    bool f1 = 1, f2 = 1;

    for (auto it : ht[x])
    {
        if (*ht[y].rbegin() >= it) f1 = 0;

        if (*ht[y].begin() <= it) f2 = 0;
    }

    if (!f1 && !f2) return 0;

    if (f1) return -1;

    if (f2) return 1;

	return 0;
}

//int main()
//{
////    freopen("help.in", "r", stdin); freopen("help.out", "w", stdout);
//
//    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//
//
//}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25