Submission #734191

#	Time	Username	Problem	Language	Result	Execution time	Memory
734191		chanhchuong123	Cloud Computing (CEOI18_clo)	C++14	100 / 100	260 ms	1236 KiB

clo

#include <bits/stdc++.h>
using namespace std;
#define task ""
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, a, b) for (int i = (b), _a = (a); i >= _a; --i)

template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}

const int dx[] = {-1, 0, 0, +1};
const int dy[] = {0, -1, +1, 0};

const long long INF = 1e18;
const int MAX = 4004;
int n, m;
long long dp[100200];

struct node {
    int c, f, v, t;

    node(int _c = 0, int _f = 0, int _v = 0, int _t = 0) {
        c = _c; f = _f; v = _v; t = _t;
    }

    bool operator< (const node &other) const {
        if (f != other.f) return f > other.f;
        return t < other.t;
    }
};
node a[MAX];

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

	if (fopen(task".inp", "r")) {
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}

	cin >> n;
	for (int i = 1; i <= n; ++i) {
        int c, f, v; cin >> c >> f >> v;
        a[i] = node(c, f, v, 0);
	}
	cin >> m;
	for (int i = 1; i <= m; ++i) {
        int c, f, v; cin >> c >> f >> v;
        a[i + n] = node(c, f, v, 1);
	}
	memset(dp, -0x3f, sizeof dp);
	sort(a + 1, a + 1 + n + m);
	dp[0] = 0;
	for (int i = 0, sum = 0; i < n + m; ++i) {
        if (a[i].t == 0) sum += a[i].c;
        if (a[i + 1].t == 0) {
            for (int j = sum; j >= 0; --j)
                maximize(dp[j + a[i + 1].c], dp[j] - a[i + 1].v);
        } else {
            for (int j = 0; j <= sum; ++j)
                maximize(dp[j], dp[j + a[i + 1].c] + a[i + 1].v);
        }
	}
	cout << *max_element(dp, dp + 100001);
	return 0;
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:45:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:46:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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