Submission #380956

#	Time	Username	Problem	Language	Result	Execution time	Memory
380956		BlancaHM	Painting Squares (IOI20_squares)	C++14	0 / 100	1133 ms	736 KiB

squares

#include <iostream>
#include <vector>
#include <unordered_set>
using namespace std;

vector<int> squares;

vector<int> paint(int n) {
	squares = vector<int>(n+1);
	squares[n] = 10;
	unordered_set<string> used;
	string window = "1111111111";
	for (int i = 0; i < 10; i++) {
		if (i == n)
			break;
		squares[i] = 1;
	}
	used.insert(window);
	for (int i = 10; i < n; i++) {
		window.erase(0, 1);
		window.push_back('0');
		if (used.find(window) == used.end())
			squares[i] = 0;
		else {
			squares[i] = 1;
			window[9] = '1';
		}
		used.insert(window);
	}
	return squares;
}

int find_location(int n, vector<int> c) {
	squares = paint(n);
	if (c[9] == -1) {
		int num = -1;
		while(num < 10 && c[num+1] != -1)
			num++;
		return n - (num+1);
	}
	bool found;
	int pos = 0;
	for (int i = 0; i <= n-10; i++) {
		found = true;
		for (int j = 0; j < 10; j++) {
			if (squares[i+j] != c[j]) {
				found = false;
				break;
			}
		}
		if (found) {
			pos = i;
			break;
		}
	}
	return pos;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55