Submission #390291

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
390291	2021-04-15 19:25:24	apostoldaniel854	Food Court (JOI21_foodcourt)	C++14	0 / 100	482 ms	55172 KiB

foodcourt

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define dbg(x) cerr << #x << " " << x << "\n"
struct node_t {
    ll sum_max;
    ll sum;
};
class segtree {
public:
    vector <node_t> seg;
    int n;
    segtree (int n) {
        this->n = n;
        seg.resize (1 + 4 * n);
    }
    node_t combine (node_t lnode, node_t rnode) {
        return {
            max (lnode.sum_max, lnode.sum + rnode.sum_max),
            lnode.sum + rnode.sum
        };
    }
    void update (int node, int lb, int rb, int pos, ll val) {
        if (lb == rb) {
            seg[node] = {max (0ll, val), val};
            return;
 
 
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