Submission #1068307

#	Time	Username	Problem	Language	Result	Execution time	Memory
1068307		quangminh412	Detecting Molecules (IOI16_molecules)	C++14	9 / 100	1 ms	436 KiB

molecules

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

/*
  John Watson
  https://codeforces.com/profile/quangminh98

  Mua Code nhu mua Florentino !!
*/

#define faster() ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define ll long long

const int oo = 1e9;

vector<int> solve_1(int l, int u, vector<int> w)
{
	vector<int> ans;
	int cur = 0;
	for (int i = 0; i < w.size(); i++)
	{
		cur += w[i];
		ans.push_back(i);
		if (l <= cur && cur <= u)
			return ans;
	}
	return {};
}

vector<int> solve_2(int l, int u, vector<int> w)
{
	vector<int> ans;
	vector<pair<int, int>> c1, c2;
	for (int i = 0; i < w.size(); i++)
	{
		if (w[i] == w[0])
			c1.push_back(make_pair(w[i], i));
		else
			c2.push_back(make_pair(w[i], i));
	}
	
	int cur = 0;
	vector<int> tmp;
	for (int i = 0; i < c1.size(); i++)
	{
		cur += c1[i].first;
		tmp.push_back(c1[i].second);
		int cop = cur;
		vector<int> copy = tmp;
		for (int j = 0; j < c2.size(); j++)
		{
			cop += c2[j].first;
			copy.push_back(c2[j].second);
			if (l <= cop && cop <= u)
				return copy;
		}
	}
	return {};
}

vector<int> find_subset(int l, int u, vector<int> w)
{
	// sub1
	bool sub1 = true;
	for (int i = 1; i < w.size(); i++)
		if (w[i] != w[i - 1])
			sub1 = false;
	if (sub1 == true)
		return solve_1(l, u, w);
	// sub2
	int mn = oo, mx = 0;
	for (int i = 1; i < w.size(); i++)
	{
		mn = min(mn, w[i]);
		mx = max(mx, w[i]);
	}
	if (mx - mn <= 1)
		return solve_2(l, u, w);
	// sub3
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> solve_1(int, int, std::vector<int>)':
molecules.cpp:20:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for (int i = 0; i < w.size(); i++)
      |                  ~~^~~~~~~~~~
molecules.cpp: In function 'std::vector<int> solve_2(int, int, std::vector<int>)':
molecules.cpp:34:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |  for (int i = 0; i < w.size(); i++)
      |                  ~~^~~~~~~~~~
molecules.cpp:44:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |  for (int i = 0; i < c1.size(); i++)
      |                  ~~^~~~~~~~~~~
molecules.cpp:50:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |   for (int j = 0; j < c2.size(); j++)
      |                   ~~^~~~~~~~~~~
molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:65:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |  for (int i = 1; i < w.size(); i++)
      |                  ~~^~~~~~~~~~
molecules.cpp:72:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |  for (int i = 1; i < w.size(); i++)
      |                  ~~^~~~~~~~~~
molecules.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type]
   80 | }
      | ^

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