Submission #580615

#	Time	Username	Problem	Language	Result	Execution time	Memory
580615		drdilyor	Divide and conquer (IZhO14_divide)	C++17	48 / 100	1085 ms	1620 KiB

divide

#if defined(ONPC) && !defined(_GLIBCXX_ASSERTIONS)
    #define _GLIBCXX_ASSERTIONS
#endif
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
#ifdef ONPC
    #include "t_debug.cpp"
#else
    #define debug(...) 42
#endif
#define allit(a) (a).begin(), (a).end()
#define sz(a) ((int) (a).size())

using namespace std;
using ll = long long;
using vi = vector<int>;
namespace pd = __gnu_pbds;
template<typename K>
using ordered_set = pd::tree<K, pd::null_type, less<int>, pd::rb_tree_tag, pd::tree_order_statistics_node_update>;
template<typename... T>
using gp_hash_table = pd::gp_hash_table<T...>;//simple using statement gives warnings

const int INF = 1e9;
const ll INFL = 1e18;
const int N = 1e5;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
mt19937 rng(RANDOM);

int solve() {
    int n; cin >> n;
    vi x(n), g(n), d(n);
    for (int i = 0; i < n; i++) cin >> x[i] >> g[i] >> d[i];

    vector<ll> prefg(n+1), prefd(n+1);
    for (int i = 0; i < n; i++) {
        prefg[i+1] = prefg[i] + g[i];
        prefd[i+1] = prefd[i] + d[i];
    }

    ll res = 0;
    for (int i = 0; i < n; i++) {
        for (int j = i; j < n; j++) {
            ll len = x[j] - x[i];
            ll energy = prefd[j+1] - prefd[i];
            if (energy > len) res = max(res, prefg[j+1] - prefg[i]);
        }
    }
    cout << res;
    return 0;
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    //cin >> t;
    while (t-- && cin) {
        if (solve()) break;
        #ifdef ONPC
            cout << "____________________" << endl;
        #endif
    }
    return 0;
}

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