Submission #1148597

#	Time	Username	Problem	Language	Result	Execution time	Memory
1148597		marinaluca	Divide and conquer (IZhO14_divide)	C++20	0 / 100	0 ms	320 KiB

divide

#include <bits/stdc++.h>

/**#pragma GCC optimize ("O3")
#pragma GCC optimize ("fast-math")
#pragma GCC optimize ("unroll-loops")**/

using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

#define int long long
#define ll long long
#define all (x) begin(x), end (x)
#define xx first
#define yy second

using pii = pair <int, int>;
using tii = tuple <int, int, int>;

/**
#define cin fin 
#define cout fout
**/

int n;
constexpr int NMAX = (int) 1e6+12;
#define ordered_set tree <int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
int x[NMAX], gold[NMAX], e[NMAX], lazy[NMAX];

inline void build_tree (int i, int st, int dr, int poz, int x)
{
    if (st == dr)
    {
        lazy[i] = x;
        return;
    }
    int mijl = (st + dr) >> 1;
    if (mijl < poz){
        build_tree ((i << 1) + 1, mijl + 1, dr, poz, x);
    }
    else
    {
        build_tree (i << 1, st, mijl, poz, x);
    }
    lazy[i] = max (lazy[i << 1], lazy[(i << 1) + 1]);
}

inline int query (int i, int st, int dr, int val)
{
    if (st == dr)   
        return st;
    int mijl = st + dr >> 1;
    if (lazy[(i << 1) + 1] >= val)
        return query((i << 1) + 1, mijl + 1, dr, val);
    return query(i << 1, st, mijl, val);
}
main()
{
    /**
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);**/
    cin >> n;
    int g, energy, i = 1;
    for (;i <= n; ++ i)
    {
        cin >> x[i] >> g >> energy;
        gold[i] = gold[i - 1] + g;
        e[i] = e[i - 1] + energy;
        build_tree(1, 1, n, i, e[i] - x[i]);
    }
    int maxi = 0;
    for (;i<=n; ++ i)
    {
        int ans = query (1, 1, n, e[i - 1] - x[i]);
        maxi = max (maxi, e[ans] - e[i - 1]);
    }
    cout << maxi;
    //return 0 ^ 0;
}

Compilation message (stderr)

divide.cpp:58:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   58 | main()
      | ^~~~

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