Submission #246332

#	Time	Username	Problem	Language	Result	Execution time	Memory
246332		aloo123	Divide and conquer (IZhO14_divide)	C++14	48 / 100	1097 ms	3328 KiB

divide

#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <iterator>
#include <limits>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <ratio>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <climits>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/trie_policy.hpp>
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define in insert
#define vll vector<ll>
#define endl "\n"
#define pll pair<ll,ll>
#define f first
#define s second
#define int ll
#define sz(x) (ll)x.size()
#define all(x) (x.begin(),x.end())
using namespace std;
// using namespace __gnu_pbds;
// typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> os;
 
 
const ll INF = 1e12;
const ll N =(1e5+5); // TODO : change value as per problem
const ll MOD = 1e9+7;

struct nice
{   
    ll x;
    ll g;
    ll e;
};
nice a[N];
ll gold[N];
ll energy[N];
bool cmp(nice b, nice c){
    return (b.x < c.x);
}

void solve(){
    ll n;
    cin >> n;

    for(int i =1;i<=n;i++){
        cin >> a[i].x >> a[i].g >> a[i].e;
        gold[i] = gold[i-1] + a[i].g;
        energy[i] = energy[i-1] + a[i].e;
    }
    sort(a+1,a+n+1,cmp);
    ll ans = 0;
    for(ll l = 1;l<=n;l++){
        for(ll r = l;r<=n;r++){
            ll tote = energy[r]-energy[l-1];
            if(tote >= (a[r].x-a[l].x)){
                ans = max(gold[r]-gold[l-1],ans);
            }
        }
    }
    cout << ans << endl;
}

signed main(){

    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    

 
     ll tt=1;   
     // cin >> tt;
    while(tt--){    
        solve();
    }    
}
/*
Pick a Range [L,R] such that :
	a) The sum of energy levels in the range >= R-L+1
	b) Sum of Gold is maximal Possible 


	
*/

• Subtask 1: 17 / 17
• Subtask 2: 31 / 31
• Subtask 3: 0 / 52