Submission #476341

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
476341	2021-09-26 05:43:26	palilo	Art Exhibition (JOI18_art)	C++17	0 / 100	1 ms	204 KiB

art

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#include <bits/stdc++.h>
using namespace std;
template <class T>
bool chmin(T& _old, T _new) { return _old > _new && (_old = _new, true); }
template <class T>
bool chmax(T& _old, T _new) { return _old < _new && (_old = _new, true); }
constexpr int64_t INF = 0x3f3f3f3f3f3f3f3f;
template <typename T>
class binary_indexed_tree {
    const size_t n;
    vector<T> tree;
public:
    binary_indexed_tree(size_t n) : n(n), tree(n + 1, ~INF) {}
    void update(size_t i, T val) {
        for (++i; i <= n; i += i & -i)
            chmax(tree[i], val);
    }
    T query(size_t i) const {
        T ret = ~INF;
        for (; i; i &= i - 1)
            chmax(ret, tree[i]);
        return ret;
    }
};
 
 
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