Submission #554112

#	Time	Username	Problem	Language	Result	Execution time	Memory
554112		keta_tsimakuridze	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	69 ms	7376 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
#define pii pair<int,int> 
#define f first
#define s second
using namespace std;
std::vector<int> find_subset(int l, int r, std::vector<int> w) {
    vector<pii> x;
    for(int i = 0; i < w.size(); i++) {
    	x.push_back({w[i], i});
	}
	sort(x.begin(), x.end());
	long long sum = 0;
	vector<int> v;
	for(int i = 0; i < x.size(); i++) {
		sum += x[i].f;
		v.push_back(x[i].s);
		if(sum >= l && sum <= r) {
			return v;
		}
	}
	v.clear();
	if(sum < l) return v;
	if(x[0].f > r) return v;
	
	int last = 0; sum = 0;
	for(int i = 0; i < x.size(); i++) {
		if(sum + x[i].f > l) break;
		sum += x[i].f;
		last = i;
	}
	int len = last + 1; 
	for(int i = last + 1; i < x.size(); i++) {
		sum -= x[i - len].f;
		sum += x[i].f;
		if(sum >= l) {
			for(int j = i - len + 1; j <= i; j++) {
				v.push_back(x[j].s);
			}
			return v;
		}
	}
	return v;
}
/*
int main() {
	int l, r, n;
	cin >> l >> r >> n;
	vector<int> w(n);
	for(int i = 0; i < n; i++) cin >> w[i];
	vector<int> v = find_subset(l, r, w); cout << v.size() << "_" << endl;
	for(int i = 0; i < v.size(); i++) cout << v[i] << " ";
}*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:9:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for(int i = 0; i < w.size(); i++) {
      |                    ~~^~~~~~~~~~
molecules.cpp:15:19: 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 i = 0; i < x.size(); i++) {
      |                 ~~^~~~~~~~~~
molecules.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for(int i = 0; i < x.size(); i++) {
      |                 ~~^~~~~~~~~~
molecules.cpp:33:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  for(int i = last + 1; i < x.size(); i++) {
      |                        ~~^~~~~~~~~~

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