Submission #489288

#	Time	Username	Problem	Language	Result	Execution time	Memory
489288		ntabc05101	Lottery (CEOI18_lot)	C++14	0 / 100	352 ms	440 KiB

lot

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

#define taskname ""

int main() {
	if (fopen(taskname".inp", "r")) {
		freopen(taskname".inp", "r", stdin);
		freopen(taskname".out", "w", stdout);
	}
	else {
		if (fopen(taskname".in", "r")) {
			freopen(taskname".in", "r", stdin);
			freopen(taskname".out", "w", stdout);
		}
	}

	cin.tie(0)->sync_with_stdio(0);

	int n, l; cin >> n >> l;
	int a[n + 1];
	a[0] = 0;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
	}

	int q; cin >> q;
	int k[q], k2[q];
	for (int i = 0; i < q; i++) {
		cin >> k[i]; k2[i] = k[i];
	}

	sort(k2, k2 + q);
	int prf[n + 1];
	prf[0] = 0;
	int res[n + 1][q];
	memset(res, 0, sizeof(res));
	for (int j = 1; j < n; j++) {
		for (int i = 1; i <= n - j; i++) {
			prf[i] = prf[i - 1] + (a[i] != a[i + j]);
		}
		for (int i = 1; i + j + l - 1 <= n; i++) {
			int p = lower_bound(k2, k2 + q, prf[i + l - 1] - prf[i - 1]) - k2;
			res[i][p]++;
			res[i + j][p]++;
		}
	}

	for (int i = 1; i <= n; i++) {
		for (int j = 1; j < q; j++) {
			res[i][j] += res[i][j - 1];
		}
	}

	for (int i = 0; i < q; i++) {
		for (int j = 1; j <= n - l + 1; j++) {
			cout << res[j][lower_bound(k2, k2 + q, k[i]) - k2] << " ";
		}

		cout << "\n";
	}

	return 0;
}

Compilation message (stderr)

lot.cpp: In function 'int main()':
lot.cpp:8:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |   freopen(taskname".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
lot.cpp:9:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |   freopen(taskname".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lot.cpp:13:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |    freopen(taskname".in", "r", stdin);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
lot.cpp:14:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |    freopen(taskname".out", "w", stdout);
      |    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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