Submission #718629

#	Time	Username	Problem	Language	Result	Execution time	Memory
718629		n1k	Detecting Molecules (IOI16_molecules)	C++17	9 / 100	1 ms	304 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>

#define all(a) (a).begin(), (a).end()
#define sz(a) (a).size()
#define ll long long
using namespace std;


std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	sort(all(w));
	ll ps = 0, ss = 0;
	for(int i = 0; i < sz(w); i++){
		ps += w[i];
		ss += w[sz(w) - i - 1];
		if(ps <= u && ss >= l){
			if(l <= ps){
				vector<int> ans(i + 1);
				iota(all(ans), 0);
				return ans;
			}
			// found
			int b1 = i, b2 = sz(w) - i - 1;
			vector<int> ans;
			if(b1 > b2){
				swap(b1, b2);
				for(int k = b1; k <= b2; k++){
					ans.push_back(k);
				}
			}
			for(int j = 0; j < b1; j++){
				ps -= w[j];
				ps += w[sz(w) - j - 1];
				if(l <= ps && ps <= u){
					for(int k = j + 1; k < b1; k++){
						ans.push_back(k);
					}
					for(int k = sz(w) - j - 1; k < sz(w); k++){
						ans.push_back(k);
					}
					return ans;
				}
			}
		}
	}
    return std::vector<int>(0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:13:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |  for(int i = 0; i < sz(w); i++){
      |                   ^
molecules.cpp:38:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |      for(int k = sz(w) - j - 1; k < sz(w); k++){
      |                                   ^

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