Submission #532809

#	Time	Username	Problem	Language	Result	Execution time	Memory
532809		exopeng	Cloud Computing (CEOI18_clo)	C++14	100 / 100	1529 ms	2036 KiB

clo

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

#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template <class T> using Tree = tree<T, null_type, less<T>,
rb_tree_tag, tree_order_statistics_node_update>;

#define mp make_pair
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define f first
#define ll long long
#define ld long double
#define s second
#define pii pair<int,int>
#define pdd pair<double,double>
#define pll pair<ll,ll>
#define is insert
const long long INF = 1e18;
const long long MOD = 1e9+7;
const int MAXN = 2001;
//store test cases here
/*

4
4 2200 700
2 1800 10
20 2550 9999
4 2000 750
3
1 1500 300
6 1900 1500
3 2400 4550
*/
int n,m;
//clock rate, # of cores, and price
pair<int,pii> co[MAXN];
pair<int,pii> od[MAXN];
ll dp[2][2001][51];
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    for(int i=0;i<2;i++){
        for(int j=0;j<2001;j++){
            for(int k=1;k<51;k++){
                dp[i][j][k]=-1*INF;
            }
        }
    }
    for(int i=0;i<n;i++){
        cin>>co[i].f>>co[i].s.f>>co[i].s.s;
        swap(co[i].f,co[i].s.f);
    }
    cin>>m;
    for(int i=0;i<m;i++){
        cin>>od[i].f>>od[i].s.f>>od[i].s.s;
        swap(od[i].f,od[i].s.f);
    }
    sort(co,co+n,greater<pair<int,pii>>());
    sort(od,od+m,greater<pair<int,pii>>());
    ll mx=0;
    for(int i=0;i<=n;i++){
        int ix=i%2;
        int nx=(ix+1)%2;
        for(int j=0;j<=m;j++){
            for(int k=0;k<=50;k++){
                if(j){
                    dp[ix][j][k]=max(dp[ix][j][k],dp[ix][j-1][k]);
                }
                mx=max(mx,dp[ix][j][k]);
                if(j==m||dp[ix][j][k]==-1*INF){
                    continue;
                }
                if(k>=od[j].s.f){
                    dp[ix][j+1][k-od[j].s.f]=
                    max(dp[ix][j+1][k-od[j].s.f],dp[ix][j][k]+od[j].s.s);

                }else if(i!=n){
                    if(co[i].f>=od[j].f){
                        if(co[i].s.f+k>=od[j].s.f){
                            dp[nx][j+1][co[i].s.f+k-od[j].s.f]
                            =max(dp[nx][j+1][co[i].s.f+k-od[j].s.f],
                                dp[ix][j][k]+od[j].s.s-co[i].s.s);    
                        }else{
                        //can still buy however
                            dp[nx][j][co[i].s.f+k]=max(dp[nx][j][co[i].s.f+k],
                                dp[ix][j][k]-co[i].s.s);
                        }
                        
                    }

                }
            }
        }
        for(int j=0;j<=m;j++){
            dp[nx][j][0]=max(dp[nx][j][0],dp[ix][j][0]);
            dp[ix][j][0]=0;
            for(int k=1;k<=50;k++){
                dp[nx][j][k]=max(dp[nx][j][k],dp[ix][j][k]);
                dp[ix][j][k]=-1*INF;
            }
        }
    }
    cout<<mx<<'\n';
    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