Submission #618195

#	Time	Username	Problem	Language	Result	Execution time	Memory
618195		joelau	Vision Program (IOI19_vision)	C++14	52 / 100	4 ms	596 KiB

vision

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

void construct_network(int H, int W, int K) {
	if (max(H,W) <= 30 || min(H,W) == 1) {
		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);
	}
	else {
		vector<int> V;
		for (int x = 0; x <= K; ++x) {
			int y = K-x;
			if (x < H && y < W) V.push_back(x*W+y);
		}
		add_or(V);
	}
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:26:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |   for (int i = 0; i < A.size(); ++i) add_and({A[i],H*W+i});
      |                   ~~^~~~~~~~~~
vision.cpp:28:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   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: 8 / 8
• Subtask 7: 0 / 14
• Subtask 8: 0 / 19