Submission #1082286

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082286		vuavisao	Cloud Computing (CEOI18_clo)	C++14	100 / 100	1306 ms	3672 KiB

clo

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

const int N = (int) 2e3 + 10;
const long long INF = (long long) 1e18;

struct computer {
	int core, circuit, cost;
	computer() : core(0), circuit(0), cost(0) {};

	bool operator<(const computer& other) const {
		if (abs(this->circuit) != abs(other.circuit)) return abs(this->circuit) > abs(other.circuit);
		if (1ll * this->circuit * other.circuit < 0) return this->circuit > 0;
		if(this->core != other.core) return this->core > other.core;
		return this->cost > other.cost;
	}
};

int n, q;
computer c[N];
computer qq[N];

namespace sub4 {
	bool check() {
		for (int i = 1; i <= n; ++ i) {
			if (c[i].circuit != 1) return false;
		}
		for (int i = 1; i <= q; ++ i) {
			if (qq[i].circuit != 1) return false;
		}
		return true;
	}

	long long dpNeed[2][N * 60];
	long long dpProfit[2][N * 60];

	void solve() {
		int maxCoreNeed = n * 50;
		for (int i = 0; i < 2; ++ i) {
			for (int s = 0; s <= maxCoreNeed; ++ s) {
				dpNeed[i][s] = INF;
			}
		}
		dpNeed[0][0] = 0;
		for (int i = 0, x = 0, y = 1; i < n; ++ i, x = !x, y = !y) {
			int cntCore = c[i + 1].core, cost = c[i + 1].cost;
			for (int s = maxCoreNeed; s >= 0; -- s) {
				int nxtS = min(maxCoreNeed, s + cntCore);
				dpNeed[y][nxtS] = min(dpNeed[y][nxtS], dpNeed[x][s] + cost);
				dpNeed[y][s] = min(dpNeed[y][s], dpNeed[x][s]);
				if (s < maxCoreNeed) {
					dpNeed[y][s] = min(dpNeed[y][s], dpNeed[y][s + 1]);
				}
				dpNeed[x][s] = INF;
			}
		}
		
		int maxCoreProfit = q * 50;
		for (int i = 0; i < 2; ++ i) {
			for (int s = 0; s <= maxCoreProfit; ++ s) {
				dpProfit[i][s] = -INF;
			}
		}
		dpProfit[0][0] = 0;
		for (int i = 0, x = 0, y = 1; i < q; ++ i, x = !x, y = !y) {
			int cntCore = qq[i + 1].core, cost = qq[i + 1].cost;
			for (int s = maxCoreProfit; s >= 0; -- s) {
				dpProfit[y][s] = max(dpProfit[y][s], dpProfit[x][s]);
				int nxtS = s + cntCore;
				if (nxtS <= maxCoreProfit) {
					dpProfit[y][nxtS] = max(dpProfit[y][nxtS], dpProfit[x][s] + cost);
				}
				dpProfit[x][s] = -INF;
			}
		}

		int x = n & 1, y = q & 1;
		long long res = 0;
		for (int s = 0; s <= min(maxCoreNeed, maxCoreProfit); ++ s) {
			res = max(res, dpProfit[y][s] - dpNeed[x][s]);
		}
		cout << res;
	}
}

namespace sub6 {
	computer general[N << 1];
	long long dp[2][N * 60];

	void solve() {
		for (int i = 1; i <= n; ++ i) {
			general[i] = c[i];
			general[i].cost = -general[i].cost;
		}
		for (int i = 1; i <= q; ++ i) {
			general[i + n] = qq[i];
			general[i + n].circuit = -general[i + n].circuit;
			general[i + n].core = -general[i + n].core;
		}
		int maxCore = n * 50;
		for (int i = 0; i < 2; ++ i) {
			for (int s = 0; s <= maxCore; ++ s) {
				dp[i][s] = -INF;
			}
		}
		sort(general + 1, general + 1 + n + q);
		dp[0][0] = 0;
		for (int i = 0, x = 0, y = 1; i < n + q; ++ i, x = !x, y = !y) {
			int cntCore = general[i + 1].core, cost = general[i + 1].cost;
			for (int s = maxCore; s >= 0; -- s) {
				int nxtS = min(maxCore, s + cntCore);
				if (nxtS >= 0) {
					dp[y][nxtS] = max(dp[y][nxtS], dp[x][s] + cost);
				}
				dp[y][s] = max(dp[y][s], dp[x][s]);
				if (s < maxCore) {
					dp[y][s] = max(dp[y][s], dp[y][s + 1]);
				}
				dp[x][s] = -INF;
			}
		}
		int x = (n + q) & 1;
		long long res = 0;
		for (int s = 0; s <= maxCore; ++ s) {
			res = max(res, dp[x][s]);
		}
		cout << res;
	}
}

int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr); cout.tie(nullptr);
	cin >> n;
	for (int i = 1; i <= n; ++ i) cin >> c[i].core >> c[i].circuit >> c[i].cost;
	cin >> q;
	for (int i = 1; i <= q; ++ i) cin >> qq[i].core >> qq[i].circuit >> qq[i].cost;
	if (sub4::check()) {
		sub4::solve();
		return 0;
	}
	sub6::solve();
	return 0;
}

• Subtask 1: 18 / 18
• Subtask 2: 18 / 18
• Subtask 3: 18 / 18
• Subtask 4: 18 / 18
• Subtask 5: 18 / 18
• Subtask 6: 10 / 10