Submission #1237819

#	Time	Username	Problem	Language	Result	Execution time	Memory
1237819		Zbyszek99	Detecting Molecules (IOI16_molecules)	C++20	100 / 100	37 ms	6828 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ll long long
#define ld long double
#define ull unsigned long long
#define ff first
#define ss second
#define pii pair<int,int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vl vector<long long>
#define pb push_back
#define rep(i, b) for(int i = 0; i < (b); ++i)
#define rep2(i,a,b) for(int i = a; i <= (b); ++i)
#define rep3(i,a,b,c) for(int i = a; i <= (b); i+=c)
#define count_bits(x) __builtin_popcountll((x))
#define all(x) (x).begin(),(x).end()
#define siz(x) (int)(x).size()
#define forall(it,x) for(auto& it:(x))
using namespace __gnu_pbds;
using namespace std;
typedef tree<int, null_type, less<int>, rb_tree_tag,tree_order_statistics_node_update> ordered_set;
//mt19937 mt;void random_start(){mt.seed(chrono::time_point_cast<chrono::milliseconds>(chrono::high_resolution_clock::now()).time_since_epoch().count());}
//ll los(ll a, ll b) {return a + (mt() % (b-a+1));}
const int INF = 1e9+50;
const ll INF_L = 1e18+40;
const ll MOD = 1e9+7;

ll pref[200001];

vi find_subset(int L, int U, vi w) 
{
    vector<pll> w2;
    rep(i,siz(w))
    {
        w2.pb({w[i],i});
    }
    sort(all(w2));
    rep(i,siz(w2))
    {
        pref[i+1] = pref[i] + w2[i].ff;
    }
    ll min_ = w2[0].ff;
    rep2(cnt,1,siz(w))
    {
        if(pref[cnt] <= U && pref[siz(w)] - pref[siz(w)-cnt] >= L)
        {
            ll cur_ans = 0;
            int l = 0;
            int r = cnt-1;
            rep2(k,l,r) cur_ans += w2[k].ff;
            while(cur_ans < L)
            {
                cur_ans -= w2[l].ff;
                l++;
                r++;
                cur_ans += w2[r].ff;
            }
            vi ans;
            rep2(k,l,r) ans.pb(w2[k].ss);
            return ans;
        }
    }
    return {};
}

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31