Submission #1003751

#	Time	Username	Problem	Language	Result	Execution time	Memory
1003751		ByeWorld	Cloud Computing (CEOI18_clo)	C++14	100 / 100	554 ms	1624 KiB

clo

#include <bits/stdc++.h>
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define int long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii, int> ipii;
const int MAXN = 1e5;
const int INF = 1e18+10;
const int LOG = 19;
const int MOD = 998244353;
const int SQRT = 450;
const vector<int> NOL = {};
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const vector<int> dx = {1, -1, 0, 0};
const vector<int> dy = {0, 0, 1, -1};

struct node {
	int cnt, pow, cost, ty;
};
bool cmp(node x, node y){
	if(x.pow==y.pow) return x.ty > y.ty;
 	return x.pow > y.pow;
}
void chmn(int &a, int b){
	a = min(a, b);
}
void chmx(int &a, int b){
	a = max(a, b);
}
int n, m;
vector <node> vec;
int dp[MAXN+30];

signed main(){
	// ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin >> n;
	for(int i=1; i<=n; i++){
		int x, y, z; cin >> x >> y >> z;
		node nw; nw.cnt = x; nw.pow = y; nw.cost = z; nw.ty = 1; 
		vec.pb(nw);
	}
	cin >> m;
	for(int i=1; i<=m; i++){
		int x, y, z; cin >> x >> y >> z;
		node nw; nw.cnt = x; nw.pow = y; nw.cost = z; nw.ty = 0;
		vec.pb(nw);
	}
	sort(vec.begin(), vec.end(), cmp);
	for(int i=1; i<=MAXN; i++) dp[i] = -INF; 

	int ANS = 0;
	for(auto in : vec){
		int cnt = in.cnt, pow = in.pow, cost = in.cost, ty = in.ty;
		// cout << cnt << ' ' << pow << ' ' << cost << ' ' << ty << " pp\n";
		if(ty){ // upd
			for(int i=MAXN; i>=1; i--){
				chmx(dp[i], dp[max(0ll, i-cnt)]-cost);
			}
		} else { // mx
			for(int i=0; i<=MAXN; i++){
				if(i+cnt<=MAXN) chmx(dp[i], dp[i+cnt]+cost);
			}
		}

		for(int i=0; i<=MAXN; i++) chmx(ANS, dp[i]);
	}
		// cout << "mn\n";
		// for(int i=1; i<=20; i++) cout << mn[i] << " \n"[i==20];
		// for(int i=1; i<=20; i++) cout << mx[i] << " \n"[i==20];
	cout << ANS << '\n';
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:61:21: warning: unused variable 'pow' [-Wunused-variable]
   61 |   int cnt = in.cnt, pow = in.pow, cost = in.cost, ty = in.ty;
      |                     ^~~

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