Submission #912499

#	Time	Username	Problem	Language	Result	Execution time	Memory
912499		tanprodium	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	39 ms	8728 KiB

molecules

// include
#include<bits/stdc++.h>

using namespace std;

// random
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

// templates
template<class X, class Y>
    bool maximize(X &x, const Y &y) {
        if (y > x) {
            x = y;
            return (true);
        } else return (false);
    }

template<class X, class Y>
    bool minimize(X &x, const Y &y) {
        if (y < x) {
            x = y;
            return (true);
        } else return (false);
    }

// define
#define fi    first
#define se    second

#define pub   push_back
#define pob   pop_back
#define puf   push_front
#define pof   pop_front
#define eb    emplace_back
#define upb   upper_bound
#define lwb   lower_bound

#define left  VAN
#define right TAN

#define all(a) (a).begin(),(a).end()
#define rall(a) (a).begin(),(a).end()
#define sort_and_unique(a) sort(all(a));(a).resize(unique(all(a))-a.begin())

// another define
using ll  = long long;
using ld  = long double;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;

// limit
const int oo = 2e9;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = (int)w.size();
    vector<pli> a(n + 5);
    for (int i = 1; i <= n; i++) {
        a[i].fi = w[i - 1];
        a[i].se = i - 1;
    }
    sort(a.begin() + 1, a.begin() + n + 1);
    vector<ll> ps(n + 5, 0);
    for (int i = 1; i <= n; i++)
        ps[i] = ps[i - 1] + a[i].fi;
    for (int k = 1; k <= n; k++) {
        if (ps[k] <= u && ps[n] - ps[n - k] >= l) {
            vector<bool> mark(n + 5, 0);
            for (int i = 1; i <= k; i++)
                mark[i] = true;
            ll s = ps[k];
            for (int i = 1; i <= min(k, n - k); i++) if (s < l) {
                mark[n - i + 1] = true;
                mark[i] = false;
                s += a[n - i + 1].fi - a[i].fi;
            }
            vector<int> ret;
            for (int i = 1; i <= n; i++) if (mark[i])
                ret.push_back(a[i].se);
            return(ret);
        }
    }
    vector<int> ret;
    return (ret);
}

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