Submission #396525

#	Time	Username	Problem	Language	Result	Execution time	Memory
396525		wenqi	Roses (BOI20_roses)	C++14	100 / 100	2 ms	332 KiB

Roses

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

ll N;
ll A, B, C, D;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> N >> A >> B >> C >> D;

	if(C * B > A * D) {
		swap(A, C);
		swap(B, D);
	}

	ll mn = 1e18;

	for(int k = 0; k < A; k++) {
		ll left = N - k * C;
		ll cnt = left > 0 ? (left - 1) / A + 1 : 0;
		mn = min(mn, cnt * B + k * D);
	}
	cout << mn << '\n';
	return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 80 / 80