Submission #819791

#	Time	Username	Problem	Language	Result	Execution time	Memory
819791		KemalK	Detecting Molecules (IOI16_molecules)	C++17	9 / 100	1 ms	304 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    int n = w.size();
    map <int, int> mp;
    for (int i = 0; i < n; i++){
        mp[w[i]]++;
    }
    if (mp.size() < 3){// subtask 2
        if (mp.size() == 1){
            ll sum = 0;
            vector <int> ans;
            bool ok = false;
            for (int i = 1; i <= n; i++){
                sum += w[0];
                if (sum >= l and sum <= u){
                    ok = true;
                    for (int j = 0; j < i; j++){
                        ans.push_back(j);
                    }
                    break;
                }
            }
            if(ok) {
                return ans;
            }
            return {};
        }
        else{ 
            int num = mp.begin()->first;
            int num2 = mp.rbegin()->first;
            bool ok = false;
            int k, k2;
            for (k = 0; k <= mp[num]; k++){
                for (k2 = 0; k2 <= mp[num2]; k2++){
                    if (k*num + k2*num2 >= l and k*num + k2*num2 <= u){
                        ok = true;
                        break;
                    }
                }
            }
            if(ok){
                vector <int> ans;
                for (int i = 0; i < n; i++){
                    if (k != 0 and w[i] == num){
                        ans.push_back(i);
                        k--;
                    }
                    if (k2 != 0 and w[i] == num2){
                        ans.push_back(i);
                        k2--;
                    }
                }
                return ans;
            } 
            else{
                return {};
            }
        }
    }
    return {};
}

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