Submission #1169156

#	Time	Username	Problem	Language	Result	Execution time	Memory
1169156		aentrenus	Painting Squares (IOI20_squares)	C++20	0 / 100	28 ms	420 KiB

squares

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
using vi = vector<int>;
using vl = vector<ll>;
using vb = vector<bool>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using str = string;
#define all(a) a.begin(), a.end()
#define print(a) for (auto elem:a) cout<<elem<<' '; cout<<'\n'
#define segprep(b) resize(1<<((int)ceil(log2(b.size()))+1))
#define FOR(a) for (int _ = 0; _ < a; _++)

vi paint(int n) {
	vi labels(n+1, 0);
	labels.back() = 69;
	int maxx = 1;
	while(maxx*(maxx+1)/2 <= n) maxx++;
	maxx--;
	fill(labels.begin()+maxx*(maxx+1)/2, labels.end()-1, 1);
	for (int sect = 1; sect <= maxx; sect++){
		labels.at(sect*(sect+1)/2-1) = 1;
	}

	return labels;
}

int find_location(int n, vi c) {
	int k = 69;
	if (find(all(c), -1) != c.end()){
		return n-(find(all(c), -1)-c.begin());
	}

	int maxx = 1;
	while(maxx*(maxx+1)/2 <= n) maxx++;
	maxx--;
	if (c.back() == c.at(k-2) && c.back() == 1){
		// mamy filler koncowy
		int filler_start = maxx*(maxx+1)/2;
		int fill_cnt = (find(c.rbegin(), c.rend(), 0)-c.rbegin())-1;
		int end_ind = filler_start+fill_cnt-1;
		return end_ind-k+1;
	}

	vi ones_inds;
	for (int i = 0; (i < k) && ((int)ones_inds.size() < 2); i++){
		if (c.at(i) == 1) ones_inds.push_back(i);
	}
	int section = ones_inds.back()-ones_inds.front();
	int second_one_ind = section*(section+1)/2-1;
	return second_one_ind-ones_inds.back();
}

/*
static int max_k = 0;
static int r, n, k, q, x;
static std::vector<int> labels, c, answers;

int main() {
	assert(scanf("%d", &r) == 1);
	for (int tc = 0; tc < r; tc++) {
		assert(scanf("%d%d", &n, &q) == 2);
		labels = paint(n);
		if ((int)labels.size() != n + 1) {
			printf("Number of labels not equal to %d\n", n + 1);
			exit(0);
		}
		for (int i = 0; i < n; i++) {
			if (labels[i] != 0 && labels[i] != 1) {
				printf("Label not 0 or 1\n");
				exit(0);
			}
		}
		k = labels[n];
		if (k < 0 || k > 1000) {
			printf("Label not in range 0 to 1000\n");
			exit(0);
		}
		if (k > max_k) {
			max_k = k;
		}
		for (int i = 0; i < q; i++) {
			assert(scanf("%d", &x) == 1);
			c.clear();
			
			for (int j = x; j < x + k; j++) {
				if (j >= n) {
					c.push_back(-1);
				} else {
					c.push_back(labels[j]);
				}
			}
			answers.push_back(find_location(n, c));
		}
	}
	printf("%d\n", max_k);
	for (int ans : answers) {
		printf("%d\n", ans);
	}
	exit(0);
}
*/

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