Submission #683160

#	Time	Username	Problem	Language	Result	Execution time	Memory
683160		Juan	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	1096 ms	340 KiB

molecules

#include<bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
#define ff first
#define ss second

vector<int> ans;
vector<pii> arr;
int ll, uu;

bool dp(int id, int sum){
	if(sum>uu) return false;
	if(sum>=ll && sum<=uu) return true;
	for(int i = id; i < arr.size(); i++){
		if(dp(i+1, sum+arr[i].ff)){
			ans.push_back(arr[i].ss);
			return true;
		}
	}
	return false;
}

vector<int> find_subset(int l, int u, vector<int> w){
	ll = l, uu = u;
	for(int i = 0; i < w.size(); i++) arr.push_back({w[i], i});
	sort(arr.begin(), arr.end(), greater<pii>());
	dp(0, 0);
	return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'bool dp(int, int)':
molecules.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for(int i = id; i < arr.size(); i++){
      |                  ~~^~~~~~~~~~~~
molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for(int i = 0; i < w.size(); i++) arr.push_back({w[i], i});
      |                 ~~^~~~~~~~~~

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