Submission #427037

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
427037	2021-06-14 11:56:51	KoD	Food Court (JOI21_foodcourt)	C++17	100 / 100	508 ms	40260 KiB

foodcourt

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#include <bits/stdc++.h>
using ll = long long;
template <class T> using Vec = std::vector<T>;
constexpr ll INF = std::numeric_limits<ll>::max() / 2;
struct Fenwick {
    Vec<ll> data;
    explicit Fenwick(const int n): data(n + 1) {}
    void add(int i, const ll x) {
        for (++i; i < (int) data.size(); i += i & -i) {
            data[i] += x;
        }
    }
    ll get(int i) const {
        ll x = 0;
        for (; i > 0; i -= i & -i) {
            x += data[i];
        }
        return x;
    }
    int lower_bound(ll x) const {
        int i = 1, j = 0;
        while (2 * i < (int) data.size()) {
            i <<= 1;
        }
        while (i > 0) {
            if (j + i < (int) data.size() and x > data[j + i]) {
 
 
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Compilation message (stderr)

foodcourt.cpp: In function 'int main()':
foodcourt.cpp:111:15: warning: unused variable 'M' [-Wunused-variable]
  111 |     const int M = scan_int();
      |               ^
foodcourt.cpp: In function 'int scan_int()':
foodcourt.cpp:95:15: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   95 |     std::scanf("%d", &x);
      |     ~~~~~~~~~~^~~~~~~~~~
foodcourt.cpp: In function 'll scan_ll()':
foodcourt.cpp:101:15: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  101 |     std::scanf("%lld", &x);
      |     ~~~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 5 / 5
• Subtask 3: 7 / 7
• Subtask 4: 21 / 21
• Subtask 5: 15 / 15
• Subtask 6: 13 / 13
• Subtask 7: 26 / 26
• Subtask 8: 11 / 11