Submission #759241

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
759241	2023-06-15 22:48:09	PurpleCrayon	Magic Tree (CEOI19_magictree)	C++17	100 / 100	614 ms	161440 KiB

magictree

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define sz(v) int(v.size())
#define ar array
const int N = 1e5+10, MOD = 1e9+7;
const ll INF = 1e18+10;
struct T {
    T *l, *r;
    ll sum;
    T() {
        l = r = nullptr;
        sum = 0;
    }
    void upd(int tl, int tr, int pos, ll x) {
        sum += x;
        if (tl == tr) {
            return;
        }
        int tm = (tl + tr) / 2;
        if (pos <= tm) {
            if (!l) l = new T();
            l->upd(tl, tm, pos, x);
        } else {
            if (!r) r = new T();
 
 
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