Submission #810346

#	Time	Username	Problem	Language	Result	Execution time	Memory
810346		peteza	Detecting Molecules (IOI16_molecules)	C++14	31 / 100	2 ms	724 KiB

molecules

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

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    if(accumulate(w.begin(), w.end(), 0ll) < l) return {};
    int cr=0;
    long long cs = 0;
    vector<pair<int, int>> vec(n);
    for(int i=0;i<n;i++) vec[i] = {w[i], i};
    sort(vec.begin(), vec.end());
    deque<int> deq;
    while(cr < n && cs < l) {
        cs += vec[cr].first;
        deq.emplace_back(vec[cr++].second);
    }
    if(cs <= u) return vector<int>(deq.begin(), deq.end());
    if(deq.empty() || cr == 0) exit(2);
    deq.pop_back(); cs -= vec[--cr].first;
    while(cr < n && cs < l) {
        cs += vec[cr].first;
        cs -= w[deq.front()];
        deq.pop_front();
        deq.emplace_back(vec[cr++].second);
    }
    if(cs < l) return {};
    return vector<int>(deq.begin(), deq.end());
}
/*
int main() {
    vector<int> arr = {342, 234, 235, 454, 345, 234, 464, 123, 134};
    auto res = find_subset(400, 800, arr);
    int sum = 0;
    for(int e:res)sum += arr[e];
    for(int i=0;i<res.size();i++) cout << res[i] << ' ';
    cout << '\n' << sum ;
}*/

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