Submission #882121

#	Time	Username	Problem	Language	Result	Execution time	Memory
882121		andro	Detecting Molecules (IOI16_molecules)	C++14	9 / 100	1 ms	600 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
using namespace std;
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    multiset<pair<long long,long long>>ms;
    int n=w.size();
    for(int i=0;i<n;i++)ms.insert({w[i],i});
    vector<int>ans;
    while(l>0){
        auto lb=ms.lower_bound({l,(long long)-1e18});
        if(lb==ms.end()){
            lb--;
            if(lb==ms.begin())return {};
        }
        else {
            pair<int,int>B=*lb;
            ans.push_back(B.second);
            u-=B.first;
            if(u<0)return {};
            break;
        }
        pair<int,int>A=*lb;
        l-=A.first;
        u-=A.first;
        if(u<0)return {};
        //cout<<l<<" "<<u;
        //cout<<endl;
        ans.push_back(A.second);
        ms.erase(A);
    }
    return ans;
}/*
signed main(){
    for(auto it:find_subset(14, 15, {5, 5,
                             6}))cout<<it<<" ";
}*/

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