Submission #673312

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
673312	2022-12-20 07:14:58	Cyanmond	Progression (NOI20_progression)	C++17	100 / 100	2089 ms	77104 KiB

Progression

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#include <bits/stdc++.h>
using i64 = long long;
constexpr i64 inf = 1ll << 60;
template <class M>
class segtree {
    int n, seg_size;
    using T = typename M::T;
    std::vector<T> tree;
    void update(int i) {
        tree[i] = M::operate(tree[2 * i], tree[2 * i + 1]);
    }
  public:
    segtree(int n_) : n(n_) {
        seg_size = 1;
        while (seg_size < n) {
            seg_size *= 2;
        }
        tree.assign(2 * seg_size, M::identity());
    }
    void set(int i, T v) {
        i += seg_size;
        tree[i] = v;
        while (i != 1) {
            i /= 2;
            update(i);
 
 
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