Submission #221344

#	Time	Username	Problem	Language	Result	Execution time	Memory
221344		galca	Vision Program (IOI19_vision)	C++14	Compilation error	0 ms	0 KiB

vision

#include <vision.h>
#include <vector>
using namespace std;

void construct_network(int H, int W, int K) {
	vector<int> positions;
	vector<int> positions2;
	vector<int> positions3;

	positions2.push_back(0);
	positions2.push_back(0);

	positions3.push_back(0);
	positions3.push_back(0);
	positions3.push_back(0);

	for (int i = 0; i < W; i++) {
		positions.push_back(i);
	}
	for (int j = 0; j < H; j++) {
		add_xor(positions);
		for (int i = 0; i < W; i++) {
			positions[i] += W;
		}
	}

	positions.erase(positions.begin(), positions.end());
	for (int i = 0; i < H; i++) {
		positions.push_back(i*W);
	}
	for (int j = 0; j < W; j++) {
		add_xor(positions);
		for (int i = 0; i < H; i++) {
			positions[i] += 1;
		}
	}

	vector<int> positions_final_or;

	// starting from W*H + H + W, put xor of all positions

	positions.erase(positions.begin(), positions.end());
	// last one is always 0
	// indeces from H*W+H+W to H*W+H+W+H
	for (int i = 0; i < H; i++) {
		positions.push_back(W*H + i);
		add_xor(positions);
	}

	positions.erase(positions.begin(), positions.end());
	for (int i = 0; i < W; i++) {
		positions.push_back(W*H + H + i);
		add_xor(positions);
	}

	// we now have H+W bits, which we need to sum and compare to K
	// H+W < 400 => 9 bits are enough for the sum
	
	int pos = H*W + H + W;

	// lets create 0 and 1 first
	int zero_pos = W*H + H + W + H - 1	
	int one_pos = add_not(zero_pos);

	int tmp = H + W - 2;
	int num_bits = 0;

	while (tmp > 0) {
		++num_bits;
		tmp >>= 1;
	}
	
	vector<int> counter;

	// set initial counter to 0
	for (int i = 0; i < num_bits; i++) {
		counter.push_back(zero_pos);
	}
 
	for (int i = 0; i < H + W; i++) {
		int carry_pos = pos + i;
		//int new_bit = pos + i;
		// adding next elements
		for (int j = 0; j < num_bits; j++) {

			positions2[0] = counter[j];
			positions2[1] = carry_pos;
			int new_res = add_xor(positions2);

			positions2[0] = counter[j];
			positions2[1] = carry_pos;
			carry_pos = add_and(positions2);

			counter[j] = new_res;
		}
	}

	// compare counter to K
	vector<int> final_and;

	for (int j = 0; j < num_bits; j++) {
		positions2[0] = (K & 1) ? one_pos : zero_pos;
		positions2[1] = counter[j];
		final_and.push_back(add_xor(positions2));
		K >>= 1;
	}

	add_not(add_or(final_and));
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:63:2: error: expected ',' or ';' before 'int'
  int one_pos = add_not(zero_pos);
  ^~~
vision.cpp:102:29: error: 'one_pos' was not declared in this scope
   positions2[0] = (K & 1) ? one_pos : zero_pos;
                             ^~~~~~~
vision.cpp:102:29: note: suggested alternative: 'fsetpos'
   positions2[0] = (K & 1) ? one_pos : zero_pos;
                             ^~~~~~~
                             fsetpos