Submission #590375

#	Time	Username	Problem	Language	Result	Execution time	Memory
590375		tutis	Uplifting Excursion (BOI22_vault)	C++17	5 / 100	5058 ms	8364 KiB

vault

/*input
2 5
2 3 1 1 4
*/
#include <bits/stdc++.h>
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
using ll = long long;
using ull = unsigned long long;
using ld = long double;
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	int M;
	ll L;
	cin >> M >> L;
	ll A[2 * M + 1];
	for (int i = 0; i <= 2 * M; i++)
		cin >> A[i];
	int D = 505000;
	vector<int> C(2 * D + 1, -1e18);
	C[D] = 0;
	int sum = 0;
	for (int i = 1; i <= M; i++)
	{
		for (int j = D + sum; j >= D - sum; j--)
		{
			for (int k = 1; k <= A[i + M]; k++)
			{
				if (j + k * i <= 2 * D)
					C[j + k * i] = max(C[j + k * i], C[j] + k);
			}
		}
		sum += i * max(A[i + M], A[-i + M]);
		for (int j = D - sum; j <= D + sum; j++)
		{
			for (int k = 1; k <= A[-i + M]; k++)
			{
				if (j - k * i >= 0)
					C[j - k * i] = max(C[j - k * i], C[j] + k);
			}
		}
	}
	if (L + D >= 0 && L + D <= 2 * D && C[L + D] >= 0)
		cout << C[L + D] + A[M] << "\n";
	else
		cout << "impossible\n";
}

Compilation message (stderr)

vault.cpp: In function 'int main()':
vault.cpp:23:27: warning: overflow in conversion from 'double' to 'std::vector<int>::value_type' {aka 'int'} changes value from '-1.0e+18' to '-2147483648' [-Woverflow]
   23 |  vector<int> C(2 * D + 1, -1e18);
      |                           ^~~~~

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