Submission #964181

#	Time	Username	Problem	Language	Result	Execution time	Memory
964181		stdfloat	Knapsack (NOI18_knapsack)	C++17	12 / 100	1 ms	348 KiB

knapsack

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

using ll = long long;

#define ff  first
#define ss  second
#define pii pair<int, int>

struct stdfloat {
	int v, w, k;
};

bool cmp(stdfloat a, stdfloat b) {
	if (a.v * b.w != b.v * a.w) return a.v * b.w > b.v * a.w;
	return a.w < b.w;
}


int main() {
	ios::sync_with_stdio(false); cin.tie(nullptr);

	int s, n;
	cin >> s >> n;

	vector<stdfloat> a(n);
	for (auto &i : a)
		cin >> i.v >> i.w >> i.k;

	sort(a.begin(), a.end(), cmp);

	ll ans = 0;
	for (auto i : a) {
		ans += (ll)min(s / i.w, i.k) * i.v;
		s -= min(s / i.w, i.k) * i.w;
	}

	cout << ans;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27