Submission #673261

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
673261	2022-12-20 03:59:34	Cyanmond	Discharging (NOI20_discharging)	C++17	100 / 100	931 ms	248720 KiB

Discharging

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#include <bits/stdc++.h>
using i64 = long long;
constexpr i64 inf = 1ll << 60;
class SparseTable {
    int n;
    std::vector<int> log_table;
    std::vector<std::vector<i64>> data;
  public:
    SparseTable(std::vector<i64> vec) : n(vec.size()) {
        log_table.assign(n + 1, 0);
        for (int i = 1; i <= n; ++i) {
            log_table[i] = std::max(log_table[i], log_table[i - 1]);
            if (2 * i <= n) {
                log_table[2 * i] = log_table[i] + 1;
            }
        }
        data.resize(log_table[n] + 1);
        data[0] = vec;
        for (int d = 1; d <= log_table[n]; ++d) {
            const int w = 1 << d;
            data[d].resize(n - w + 1);
            for (int i = 0; i + w <= n; ++i) {
                data[d][i] = std::max(data[d - 1][i], data[d - 1][i + w / 2]);
            }
        }
    }
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 25 / 25
• Subtask 4: 11 / 11
• Subtask 5: 14 / 14
• Subtask 6: 28 / 28