Submission #751067

#	Time	Username	Problem	Language	Result	Execution time	Memory
751067		KN200711	Detecting Molecules (IOI16_molecules)	C++14	19 / 100	1 ms	212 KiB

molecules

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

vector<int> find_subset(int l, int u, vector<int> w) {
	int ans = 0;
	vector< pair<int, int> > w1(w.size());
	for(int k=0;k<w.size();k++) {
		w1[k].first = w[k];
		w1[k].second = k;
	}
	sort(w1.begin(), w1.end());
	vector<int> sp;
	sp.clear();
	for(int k=0;k<w1.size();k++) {
		if(ans + w1[k].first <= u) {
			ans += w1[k].first;
			sp.push_back(w1[k].second);
		}
	}
	if(ans >= l) return sp;
	int V1 = sp.size() - 1, W = w.size() - 1;
	while(ans < l && V1 >= 0 && W >= 0) {
		ans += w1[W].first  - w1[sp[V1]].first;
		sp[V1] = w1[W].second;
		V1--;
		W--;
	}
	if(ans >= l) return sp;
	sp.clear();
	return sp;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int k=0;k<w.size();k++) {
      |              ~^~~~~~~~~
molecules.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int k=0;k<w1.size();k++) {
      |              ~^~~~~~~~~~

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