Box stack I

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define die(x) return cout << x << endl, 0
#define all(o) o.begin(), o.end()
#define endl '\n'
#define IOS ios::sync_with_stdio(0), cin.tie(0)
#define FILE freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define SZ(x) ((int)(x).size())
typedef long double ld;
typedef long long ll;
int gcd(int x,int y){ return (!y ? x : gcd(y, x%y)); }
int to_int(string sconvert){stringstream geek(sconvert);int xconvert = 0; geek >> xconvert; return xconvert;}
const int MAXN=4100000+30,MAX_LOG=40,INF=1e18+10,MOD=1e9+7;
const double PI = acos(-1);
int mod(int x) { return (x % MOD + MOD) % MOD; }
int max(int x,int y){ return (x>y?x:y); }
int power(int x,int y){
    if(y==0)return 1;
    int c=power(x,y/2);
    c=(c*c)%MOD;
    if(y%2)c=(c*x)%MOD;
    return c;
}
 
 
int n, m;

// int holes[MAXN];
// int coins[MAXN];

// int a[MAXN];
vector<vector<int>> boxes;
int box_order[2100];
int best_height[MAXN];

bool compare(int first, int second){
    return boxes[first][0] + boxes[first][1] < boxes[second][0] + boxes[second][1];
}

int MAIN(){
    cin>>n;
    boxes.assign(n, vector<int>(3));
    for(int i=0; i<n; i++){
        cin >> boxes[i][0] >> boxes[i][1] >> boxes[i][2];
        box_order[i] = i;
    }

    sort(box_order, box_order + n, compare);

    for(int i=0; i<MAXN; i++)best_height[i] = -INF;
    
    
    best_height[0] = 0;
    int total_weight = 0;
    int answer = 0;

    for(int i=0; i<n; i++){
        int box = box_order[i];
        int limit = min(total_weight, 2000LL);
        for(int weight=limit; weight>=0; weight--){
            if(best_height[weight] >= 0 && weight <= boxes[box][1]){
                int new_weight = weight + boxes[box][0];
                best_height[new_weight]= max(best_height[new_weight], best_height[weight] + boxes[box][2]);
                answer = max(answer, best_height[new_weight]);
            }
        }
        total_weight+= boxes[box][0];
    }

    cout<<answer<<endl;
    return 0;
}

int32_t main(){
    IOS;
    int t=1;
    // cin>>t;
    while(t--)MAIN();
    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED

Test 24

Verdict: ACCEPTED

Test 25

Verdict: ACCEPTED

Test 26

Verdict: ACCEPTED

Test 27

Verdict: ACCEPTED

Test 28

Verdict: ACCEPTED

Test 29

Verdict: ACCEPTED

Test 30

Verdict: ACCEPTED

Test 31

Verdict: ACCEPTED

Test 32

Verdict: ACCEPTED

Test 33

Verdict: ACCEPTED

Test 34

Verdict: ACCEPTED

Test 35

Verdict: ACCEPTED

Test 36

Verdict: ACCEPTED

Test 37

Verdict: ACCEPTED

Test 38

Verdict: ACCEPTED

Test 39

Verdict: ACCEPTED

Test 40

Verdict: ACCEPTED

Test 41

Verdict: ACCEPTED

Test 42

Verdict: ACCEPTED

Test 43

Verdict: ACCEPTED

Test 44

Verdict: ACCEPTED

Test 45

Verdict: ACCEPTED

Test 46

Verdict: ACCEPTED

Test 47

Verdict: ACCEPTED

Test 48

Verdict: ACCEPTED

Test 49

Verdict: ACCEPTED

Test 50

Verdict: ACCEPTED

Test 51

Verdict: ACCEPTED

Test 52

Verdict: ACCEPTED

Test 53

Verdict: ACCEPTED

Test 54

Verdict: ACCEPTED

Test 55

Verdict: ACCEPTED

Test 56

Verdict: ACCEPTED

Test 57

Verdict: ACCEPTED

Test 58

Verdict: ACCEPTED

Test 59

Verdict: ACCEPTED

Test 60

Verdict: ACCEPTED