Submission #429173

#	Time	Username	Problem	Language	Result	Execution time	Memory
429173		albertolg101	Vision Program (IOI19_vision)	C++17	100 / 100	20 ms	1680 KiB

vision

#include <bits/stdc++.h>
#include "vision.h"
	
using namespace std;
	
vector<int> g (int a, int b)
{
	return vector<int> {a, b};
}

void construct_network(int H, int W, int K) {
	
	vector<int> ar;

	{
		int last = 0;
		for(int i = 0 ; i < H - 1 ; i++)
		{
			vector<int> q;
			
			for(int j = 0 ; j < W ; j++)
			{
				q.push_back(i * W + j);
			}

			if(last != 0)
				q.push_back(last);

			last = add_xor(q);
			ar.push_back(last);
		}

		last = 0;
		for(int j = 0 ; j < W ; j++)
		{
			vector<int> q;

			for(int i = 0 ; i < H ; i++)
			{
				q.push_back(i * W + j);
			}

			if(last != 0)
				q.push_back(last);

			last = add_xor(q);
			ar.push_back(last);
		}
	}

	int zero = ar.back(),
		one = add_not(zero);

	vector<int> c;
	for(int i = 0 ; i < 9 ; i++)
		c.push_back(add_and(g(zero, one)));

	for(int i = 0 ; i < ar.size() ; i++)
	{
		vector<int> new_c;
		int rest = ar[i];

		for(int j = 0 ; j < c.size() ; j++)
		{
			new_c.push_back(add_xor(g(c[j], rest)));
			rest = add_and(g(c[j], rest));
		}

		c = new_c;
	}

	vector<int> d, k;

	for(int i = 0 ; i < 9 ; i++)
	{
		if((1<<i) & K)
		{
			k.push_back(add_and(g(one, one)));	
		}

		else
		{
			k.push_back(add_and(g(zero, zero)));
		}
	}

	for(int i = 0 ; i < 9 ; i++)
	{
		d.push_back(add_xor(g(c[i], k[i])));
	}

	add_not(add_or(d));

	return ;
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:58:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |  for(int i = 0 ; i < ar.size() ; i++)
      |                  ~~^~~~~~~~~~~
vision.cpp:63:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |   for(int j = 0 ; j < c.size() ; j++)
      |                   ~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 15 / 15
• Subtask 5: 12 / 12
• Subtask 6: 8 / 8
• Subtask 7: 14 / 14
• Subtask 8: 19 / 19