Submission #995716

#	Time	Username	Problem	Language	Result	Execution time	Memory
995716		kokoue	Detecting Molecules (IOI16_molecules)	C++14	31 / 100	1100 ms	49396 KiB

molecules

#include<bits/stdc++.h>
#define maxn 1000000
using namespace std;
//set<long long> is;
unordered_map<int,bool> is;
unordered_map<long long,long long> idx;
vector<int> find_subset(int l,int u,vector<int> w)
{
    int n=w.size();
    is[0]=1;
    idx[0]=0;
    int sum=0;
    bool fl=0;
    long long mx=0;
    for(int i=0;i<n;i++)
    {
        for(int j=mx;j>=0;j--)
        {
            if(!is[j]) continue;
            long long e=j;
            if(!is[e+w[i]])
            {

                is[e+w[i]]=1;
                idx[e+w[i]]=i;
                if(e+w[i]>=l && e+w[i]<=u)
                {
                    sum=e+w[i];
                    fl=1;
                    break;
                }
                mx=max(mx,e+w[i]);
            }
        }
        if(fl) break;
    }
    vector<int> res;
    while(sum!=0)
    {
        res.push_back(idx[sum]);
        sum-=w[idx[sum]];
    }
    return res;
}

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