Submission #1367646

#	Time	Username	Problem	Language	Result	Execution time	Memory
1367646		mariza	Detecting Molecules (IOI16_molecules)	C++20	9 / 100	0 ms	344 KiB

molecules

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

typedef long long ll;

vector<int> find_subset(int l, int r, vector<int> a) {
    ll n=a.size();
    sort(a.begin(),a.end());

    ll cl=l, cr=r;
    bool ok=0;
    for(ll i=0; i<n; i++){
        cl-=a[n-1-i];
        cr-=a[i];

        if(cl<=0 && 0<=cr) ok=1;
    }

    if(!ok) return vector<int>();

    bool ans[n+1][l]={};
    for(ll i=n-1; i>=0; i--){
        for(ll x=0; x<l; x++){
            if(x+a[i]>r) ans[i][x]=ans[i+1][x];
            else if(x+a[i]>=l) ans[i][x]=1;
            else ans[i][x]=ans[i+1][x]|ans[i+1][x+a[i]];
        }
    }

    vector<int> s;
    ll x=0;
    for(ll i=0; i<n; i++){
        if(x+a[i]<=r && (x+a[i]>=l || ans[i+1][x+a[i]]==1)){
            s.push_back(i);
            x+=a[i];
        }
        if(x>=l) break;
    }
    return s;
}

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