Submission #1258167

#	Time	Username	Problem	Language	Result	Execution time	Memory
1258167		hungeazy	Cloud Computing (CEOI18_clo)	C++20	100 / 100	195 ms	2128 KiB

clo

/*
* @Author: hungeazy
* @Date:   2025-08-14 22:13:40
* @Last Modified by:   hungeazy
* @Last Modified time: 2025-08-14 22:31:23
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp> 
// #pragma GCC optimize("O3")  
// #pragma GCC optimize("unroll-loops")  
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")  
using namespace std;
using namespace __gnu_pbds; 
bool M1;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define int long long
#define ll long long 
#define ull unsigned long long
#define sz(x) x.size()
#define sqr(x) (1LL * (x) * (x))
#define all(x) x.begin(), x.end()
#define fill(f,x) memset(f,x,sizeof(f))
#define FOR(i,l,r) for(int i=l;i<=r;i++)
#define FOD(i,r,l) for(int i=r;i>=l;i--)
#define debug(x) cout << #x << " = " << x << '\n'
#define ii pair<int,int>
#define iii pair<int,ii>
#define di pair<ii,ii>
#define vi vector<int>
#define vii vector<ii>
#define mii map<int,int>
#define fi first
#define se second
#define pb push_back
#define MOD 1000000007
#define __lcm(a,b) (1ll * ((a) / __gcd((a), (b))) * (b))
#define YES cout << "YES\n"
#define NO cout << "NO\n"
#define MASK(i) (1LL << (i))
#define c_bit(i) __builtin_popcountll(i)
#define BIT(x,i) ((x) & MASK(i))
#define SET_ON(x,i) ((x) | MASK(i))
#define SET_OFF(x,i) ((x) & ~MASK(i))
#define oo 1e18
#define name "CLOUD"
#define endl '\n'
#define memory() cerr << abs(&M2-&M1)/1024.0/1024 << " MB" << endl
#define time() cerr << endl << "-------------Time:" << 1000.0 * clock() / CLOCKS_PER_SEC << "ms." << endl
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
template <class T> using ordered_set = tree <T, null_type, less_equal <T>, rb_tree_tag,tree_order_statistics_node_update>;
const int N = (int)4e3+10;
int n,m;

struct Computer {
	int c,f,v,id;
	bool operator<(const Computer &other) {
		if (f == other.f) return id < other.id;
		return f > other.f;
	}
} a[N];
// Bai 2 - DTQG TPHCM 2024
namespace hungeazy {

	const int M = (int)2e5+10;
	int dp[M];

	void solve(void)
	{
		sort(a+1,a+n+m+1);
		fill(dp,-0x3f);
		dp[0] = 0;
		int sum = 0;
		FOR(i,1,n+m)
			if (a[i].id <= n)
			{
				FOD(j,sum,0)	
					maximize(dp[j+a[i].c],dp[j]-a[i].v);
				sum += a[i].c;
			}
			else 
				FOR(j,a[i].c,sum) 
					maximize(dp[j-a[i].c],dp[j]+a[i].v);
		cout << *max_element(dp,dp+M);
	}
	
}

bool M2;
signed main()
{
    fast;
    if (fopen(name".inp","r"))
    {
    	freopen(name".inp","r",stdin);
    	freopen(name".out","w",stdout);
    }
    cin >> n;
    FOR(i,1,n) 
    {
    	cin >> a[i].c >> a[i].f >> a[i].v;
    	a[i].id = i;
    }
    cin >> m;
    FOR(i,n+1,n+m)
    {
    	cin >> a[i].c >> a[i].f >> a[i].v;
    	a[i].id = i;
    }
    hungeazy::solve();
    time();
    memory();
    return 0;
}
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// ░  ░  ░   ░              ░       ░

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:96:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |         freopen(name".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
clo.cpp:97:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |         freopen(name".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