Submission #618194

#	Time	Username	Problem	Language	Result	Execution time	Memory
618194		joelau	Vision Program (IOI19_vision)	C++14	44 / 100	15 ms	4612 KiB

vision

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

void construct_network(int H, int W, int K) {
	vector<int> A;
	for (int i = 0; i < H; ++i) for (int j = 0; j < W; ++j) {
		vector<int> V;
		if (i+K < H) V.push_back((i+K)*W+j);
		if (i-K >= 0) V.push_back((i-K)*W+j);
		if (j+K < W) V.push_back(i*W+j+K);
		if (j-K >= 0) V.push_back(i*W+j-K);
		for (int x = 1; x < K; ++x) {
			int y = K-x;
			if (i+x < H && j+y < W) V.push_back((i+x)*W+j+y);
			if (i+x < H && j-y >= 0) V.push_back((i+x)*W+j-y);
			if (i-x >= 0 && j+y < W) V.push_back((i-x)*W+j+y);
			if (i-x >= 0 && j-y >= 0) V.push_back((i-x)*W+j-y);
		}
		if (!V.empty()) {
			add_or(V);
			A.push_back(i*W+j);
		}
	}
	for (int i = 0; i < A.size(); ++i) add_and({A[i],H*W+i});
	vector<int> V;
	for (int i = 0; i < A.size(); ++i) V.push_back(H*W+A.size()+i);
	add_or(V);
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for (int i = 0; i < A.size(); ++i) add_and({A[i],H*W+i});
      |                  ~~^~~~~~~~~~
vision.cpp:27:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for (int i = 0; i < A.size(); ++i) V.push_back(H*W+A.size()+i);
      |                  ~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 0 / 15
• Subtask 5: 12 / 12
• Subtask 6: 0 / 8
• Subtask 7: 0 / 14
• Subtask 8: 0 / 19