Submission #794785

#	Time	Username	Problem	Language	Result	Execution time	Memory
794785		bane	Detecting Molecules (IOI16_molecules)	C++17	9 / 100	13 ms	304 KiB

molecules

#include<bits/stdc++.h>

#include "molecules.h"

using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

vector<int> find_subset(int L, int u, vector<int> k) {
    int n = (int)k.size();
    vector<pair<int,int>>w(n);
    for (int i = 0; i < n; i++){
        w[i] = {k[i], i};
    }
    for (int i = 0; i < 10000; i++){
        shuffle(w.begin(),w.end(),rng);
        int l = 0, r = 0;
        long long s = 0;
        while(r < n){
            s += w[r].first;
            while(s > u){
                s -= w[l].first;
                ++l;
            }
            if (s >= L && s <= u){
                vector<int>ans;
                while(l<=r){
                    ans.push_back(w[l].second);
                    ++l;
                }
                return ans;
            }
            ++r;
        } 
    }
    return std::vector<int>(0);
}

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