Submission #147135

#	Time	Username	Problem	Language	Result	Execution time	Memory
147135		Mamnoon_Siam	Vision Program (IOI19_vision)	C++17	100 / 100	15 ms	1524 KiB

vision

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

const int maxn = 202;

int H, W, K;
int one, zero;

int cell(int i, int j) {
	return i * W + j;
}

vector<int> binary_addition(vector<int> A, vector<int> B) {
	int carry = zero;
	vector<int> ret;
	int len = max(A.size(), B.size()) + 1;
	while(A.size() < len) A.emplace_back(zero);
	while(B.size() < len) B.emplace_back(zero);
	for(int i = 0; i < len - 1; i++) {
		ret.emplace_back(add_xor({carry, A[i], B[i]}));
		int ab = add_and({carry, A[i]});
		int bc = add_and({A[i], B[i]});
		int ca = add_and({carry, B[i]});
		carry = add_or({ab, bc, ca});
	} ret.emplace_back(carry);
	return ret;
}

void construct_network(int _H, int _W, int _K) {
	H = _H, W = _W, K = _K;
	if(H * W == 2) {
		one = 0;
		zero = add_not(one);
	} else {
		zero = add_and({0, 1, 2});
		one = add_not(zero);
	}
	vector<int> R_prefix, C_prefix;
	{
		int prev = zero;
		for(int i = 0; i < H - 1; i++) {
			vector<int> tmp;
			for(int j = 0; j < W; j++) {
				tmp.emplace_back(cell(i, j));
			}
			tmp.emplace_back(prev);
			R_prefix.emplace_back(add_xor(tmp));
			prev = R_prefix.back();
		}
		R_prefix.emplace_back(zero);
	}
	{
		int prev = zero;
		for(int j = 0; j < W - 1; j++) {
			vector<int> tmp;
			for(int i = 0; i < H; i++) {
				tmp.emplace_back(cell(i, j));
			}
			tmp.emplace_back(prev);
			C_prefix.emplace_back(add_xor(tmp));
			prev = C_prefix.back();
		}
		C_prefix.emplace_back(zero);
	}
	vector<int> R_sum;
	for(int i = 0; i < H - 1; i++) {
		vector<int> tmp;
		int carry = R_prefix[i];
		for(int j = 0; j < R_sum.size(); j++) {
			tmp.emplace_back(add_xor({carry, R_sum[j]}));
			carry = add_and({carry, R_sum[j]});
		}
		if(tmp.size() < 32 - __builtin_clz(i + 1)) {
			tmp.emplace_back(carry);
		}
		R_sum = tmp;
	}
	vector<int> C_sum;
	for(int i = 0; i < W - 1; i++) {
		vector<int> tmp;
		int carry = C_prefix[i];
		for(int j = 0; j < C_sum.size(); j++) {
			tmp.emplace_back(add_xor({carry, C_sum[j]}));
			carry = add_and({carry, C_sum[j]});
		}
		if(tmp.size() < 32 - __builtin_clz(i + 1)) {
			tmp.emplace_back(carry);
		}
		C_sum = tmp;
	}

	vector<int> tot = binary_addition(R_sum, C_sum);

	vector<int> allzero, allone;
	for(int i = 0; i < tot.size(); i++) {
		if(K & (1 << i)) {
			allzero.emplace_back(add_xor({one, tot[i]}));
		} else {
			allzero.emplace_back(add_xor({zero, tot[i]}));
		}
	}
	for(int i = 0; i < allzero.size(); i++) {
		allone.emplace_back(add_not(allzero[i]));
	}
	add_and(allone);
}

Compilation message (stderr)

vision.cpp: In function 'std::vector<int> binary_addition(std::vector<int>, std::vector<int>)':
vision.cpp:18:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(A.size() < len) A.emplace_back(zero);
        ~~~~~~~~~^~~~~
vision.cpp:19:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(B.size() < len) B.emplace_back(zero);
        ~~~~~~~~~^~~~~
vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:70:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < R_sum.size(); j++) {
                  ~~^~~~~~~~~~~~~~
vision.cpp:74:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(tmp.size() < 32 - __builtin_clz(i + 1)) {
      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
vision.cpp:83:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < C_sum.size(); j++) {
                  ~~^~~~~~~~~~~~~~
vision.cpp:87:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(tmp.size() < 32 - __builtin_clz(i + 1)) {
      ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
vision.cpp:96:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < tot.size(); i++) {
                 ~~^~~~~~~~~~~~
vision.cpp:103:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < allzero.size(); i++) {
                 ~~^~~~~~~~~~~~~~~~

• 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