Submission #593565

#	Time	Username	Problem	Language	Result	Execution time	Memory
593565		Valaki2	Detecting Molecules (IOI16_molecules)	C++14	9 / 100	1 ms	296 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second

const vector<int> e = {};

int n;
vector<ll> v;
vector<int> idx;
ll a, b;

vector<int> construct(int l, int r) {
    vector<int> result;
    for(int i = l; i <= r; i++) {
        result.pb(idx[i] - 1);
    }
    return result;
}

vector<int> solve() {
    idx.assign(1 + n + 1, 0);
    vector<pair<ll, int> > p(1 + n + 1, mp(0, 0));
    for(int i = 1; i <= n; i++) {
        p[i].fi = v[i];
        p[i].se = i;
    }
    sort(p.begin() + 1, p.end() - 1);
    for(int i = 1; i <= n; i++) {
        idx[i] = p[i].se;
    }
    ll sum = 0, len = -1;
    for(int i = 1; i <= n; i++) {
        sum += v[i];
        if(sum >= a) {
            if(sum <= b) {
                return construct(1, i);
            }
            len = i - 1;
            break;
        }
    }
    if(len == -1) {
        return e;
    }
    sum = 0;
    int l = 1, r = len;
    for(int i = 1; i <= len; i++) {
        sum += v[i];
    }
    while(r <= n) {
        if(sum >= a && sum <= b) {
            return construct(l, r);
        }
        sum -= v[l];
        l++;
        r++;
        sum += v[r];
    }
    return e;
}

vector<int> find_subset(int l, int u, vector<int> w) {
    n = w.size();
    v.assign(1 + n + 1, 0);
    for(int i = 1; i <= n; i++) {
        v[i] = w[i - 1];
    }
    a = l;
    b = u;
    return solve();
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31