Submission #401851

#	Time	Username	Problem	Language	Result	Execution time	Memory
401851		rayna	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	104 ms	15016 KiB

molecules

#include <iostream>
#include <fstream>
#include <vector>
#include <set>
#include <list>
#include <string>
#include <queue>
#include <math.h>
#include <algorithm>

using namespace std;

typedef vector<int> vi;
typedef set<int> si;
typedef pair<int, int> pii;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    vi a[n];
    for (int i=0; i<n; i++) {
        a[i] = {w[i], i};
    }
    sort(a, a+n);
    
    vi out = {};
    long long s = 0; int k = 0;
    for (int i=0; i<n; i++) {
        s += a[i][0];
        if (s >= l) {
            if (s <= u) {
                //fill result with 0 to i, inc
                for (int j=0; j<=i; j++) {
                    out.push_back(a[j][1]);
                }
                return out;
            }
            if (i == 0) {
                return out;
            }
            
            s -= a[i][0];
            k = i-1;
            break;
        }
    }
    
    for (int i=1; i<(n-k); i++) {
        s -= a[i-1][0];
        s += a[i+k][0];
        if (s >= l) {
            for (int j=i; j<=(i+k); j++) {
                out.push_back(a[j][1]);
            }
            return out;
        }
    }
    return out;
}

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