Submission #717721

#	Time	Username	Problem	Language	Result	Execution time	Memory
717721		Toxtaq	Detecting Molecules (IOI16_molecules)	C++17	46 / 100	1072 ms	2388 KiB

molecules

#include<bits/stdc++.h>
#include "molecules.h"
using namespace std;
vector<int> find_subset(int l, int r, vector<int>w){
    int n = w.size();
    bitset<500001>table;
    vector<int>par(r + 1, -1);
    table[0] = 1;
    for(int i = 0;i < n;++i){
        for(int j = r;j >= 1;--j){
            if(table[j])continue;
            if(j - w[i] >= 0 && table[j - w[i]]){
                table[j] = 1;
                par[j] = i;
            }
        }
    }
    int num = -1;
    for(int i = l;i <= r;++i){
        if(table[i]){
            num = i;
            break;
        }
    }
    vector<int>ans;
    if(num < 0)return ans;
    while(par[num] != -1){
        ans.push_back(par[num]);
        num -= w[par[num]];
    }
    return ans;
}
//
//int main()
//{
//    int l, r, n;
//    cin >> l >> r >> n;
//    vector<int>v(n);
//    for(int i = 0;i < n;++i)cin >> v[i];
//    vector<int>ans = find_subset(l, r, v);
//    for(int i : ans)cout << i << " ";
//}

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