Submission #863581

#	Time	Username	Problem	Language	Result	Execution time	Memory
863581		TAhmed33	A Difficult(y) Choice (BOI21_books)	C++17	10 / 100	1 ms	856 KiB

books

#include <bits/stdc++.h>
#include <books.h>
using namespace std;
typedef long long ll;
void solve (int n, int k, ll a, int s) {
	map <int, ll> dd;
	int l = 1, r = n - k + 1;
	int ans = -1;
	while (l <= r) {
		int mid = (l + r) >> 1;
		ll sum = 0;
		for (int i = mid; i <= mid + k - 1; i++) {
			if (!dd.count(i)) {
				assert(dd.size() < s);
				dd[i] = skim(i);
			}
			sum += dd[i];
		}
		if (sum >= a) {
			r = mid - 1; ans = mid;
		} else {
			l = mid + 1;
		}
	}
	if (ans == -1) {
		impossible();
		return;
	}
	ll t = 0;
	for (int i = ans; i <= ans + k - 1; i++) t += dd[i];
	if (t > 2 * a) {
		impossible();
		return;
	}
	vector <int> ret;
	for (int i = ans; i <= ans + k - 1; i++) ret.push_back(i);
	answer(ret);
}

Compilation message (stderr)

In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from books.cpp:1:
books.cpp: In function 'void solve(int, int, ll, int)':
books.cpp:14:22: warning: comparison of integer expressions of different signedness: 'std::map<int, long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   14 |     assert(dd.size() < s);
      |            ~~~~~~~~~~^~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 10 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20