Submission #305264

#	Time	Username	Problem	Language	Result	Execution time	Memory
305264		Vimmer	Comparing Plants (IOI20_plants)	C++14	5 / 100	226 ms	43384 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 id;

vector <pair <int, int> > gt[N];

set <int> g[N];

void dfs(int v)
{
    pair <int, int> pt;

    pt.F = id++;

    for (auto it : g[v])
      dfs(it);

    pt.S = id++;

    gt[v].PB(pt);
}

void init(int k, vector<int> r)
{
    if (k == 2)
    {
        set <int> se; se.clear();

        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) dfs(it);
    }

	return;
}

int compare_plants(int x, int y)
{
    for (auto it : gt[x])
        for (auto itr : gt[y])
          if (it.F <= itr.F && itr.S <= it.S) return 1;
            else if (itr.F <= it.F && it.S <= itr.S) 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);
//
//
//}

Compilation message (stderr)

plants.cpp: In function 'int compare_plants(int, int)':
plants.cpp:76:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   76 |     for (auto it : gt[x])
      |     ^~~
plants.cpp:81:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   81 |  return 0;
      |  ^~~~~~

• Subtask 1: 5 / 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