Submission #751066

#	Time	Username	Problem	Language	Result	Execution time	Memory
751066		KN200711	Detecting Molecules (IOI16_molecules)	C++14	9 / 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;
	sort(w.begin(), w.end());
	vector<int> sp;
	sp.clear();
	for(int k=0;k<w.size();k++) {
		if(ans + w[k] <= u) {
			ans += w[k];
			sp.push_back(k);
		}
	}
	if(ans >= l) return sp;
	int V1 = sp.size() - 1, W = w.size() - 1;
	while(ans < l && V1 >= 0 && W >= 0) {
		if(ans + w[W] - w[sp[V1]] <= u) {
			ans += w[W]  - w[sp[V1]];
			sp[V1] = W;
		}
		else {
			int G = upper_bound(w.begin(), w.end(), u + sp[V1] - ans) - w.begin();
			G--;
			ans += w[G] - w[sp[V1]];
			sp[V1] = G;
		}
		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:10:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |  for(int k=0;k<w.size();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