Submission #530332

#	Time	Username	Problem	Language	Result	Execution time	Memory
530332		abc864197532	Lottery (CEOI18_lot)	C++17	45 / 100	147 ms	65540 KiB

lot

#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define X first
#define Y second
#define pii pair<int,int>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T i, U ...j) {
	cout << i << ' ', abc(j...);
}
template <typename T> void printv(T l, T r) {
	for (; l != r; ++l)
		cout << *l << " \n"[l + 1 == r];
}
#ifdef Doludu
#define test(x...) abc("[" + string(#x) + "]", x);
#else
#define test(x...) void(0);
#endif
const int N = 2000;

int main () {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n, len;
	cin >> n >> len;
	vector <vector <int>> res(n + 1, vector <int> (n + 1, 0)); // diff, start
	vector <int> a(n), v;
	for (int i = 0; i < n; ++i) {
		cin >> a[i];
	}
	v = a;
	sort(all(v)), v.resize(unique(all(v)) - v.begin());
	vector <vector <int>> to_pos(v.size());
	for (int i = 0; i < n; ++i)
		to_pos[lower_bound(all(v), a[i]) - v.begin()].pb(i);
	for (int x = 0; x < v.size(); ++x) {
		for (int i = 0; i < to_pos[x].size(); ++i) for (int j = i + 1; j < to_pos[x].size(); ++j) {
			int a = to_pos[x][i], b = to_pos[x][j];
			// x + i = a, y + i = b, a - len < st <= a
			// y - x = b - a
			// a - len + 1 <= st < a + 1
			int d = b - a;
			int bound = max(n - d - len + 1, 0);
			test(d, a, b, max(a - len + 1, 0), min(a + 1, bound));
			res[d][max(a - len + 1, 0)]++;
			res[d][min(a + 1, bound)]--;
		}
	}
	for (int d = 1; d <= n; ++d) {
		for (int i = 1; i <= n; ++i) {
			res[d][i] += res[d][i - 1];
		}
	}
	int q;
	cin >> q;
	while (q--) {
		int x;
		cin >> x;
		vector <int> ans(n - len + 1);
		for (int i = 0; i + len <= n; ++i) {
			for (int d = 1; i + d + len <= n; ++d) {
				if (res[d][i] >= len - x)
					ans[i]++, ans[i + d]++;
			}
		}
		printv(all(ans));
	}
}

Compilation message (stderr)

lot.cpp: In function 'int main()':
lot.cpp:42:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |  for (int x = 0; x < v.size(); ++x) {
      |                  ~~^~~~~~~~~~
lot.cpp:43:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |   for (int i = 0; i < to_pos[x].size(); ++i) for (int j = i + 1; j < to_pos[x].size(); ++j) {
      |                   ~~^~~~~~~~~~~~~~~~~~
lot.cpp:43:68: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |   for (int i = 0; i < to_pos[x].size(); ++i) for (int j = i + 1; j < to_pos[x].size(); ++j) {
      |                                                                  ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20