Submission #1117911

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1117911	2024-11-24 09:48:44	Zero_OP	Food Court (JOI21_foodcourt)	C++14	24 / 100	346 ms	55368 KiB

foodcourt

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#include <bits/stdc++.h>
using namespace std;
#define dbg(x) "[" #x " = " << (x) << "]"
struct fenwick_tree{
    vector<long long> bit;
    fenwick_tree(int n) : bit(n + 1, 0) {}
    void update(int i, long long v){
        for(; i < (int)bit.size(); i += i & (-i)) bit[i] += v;
    }
    long long query(int i){
        long long sum = 0;
        for(; i > 0; i -= i & (-i)) sum += bit[i];
        return sum;
    }
    long long query(int l, int r){
        return query(r) - query(l - 1);
    }
    int find_last(long long target){
        int i = 0;
        for(int b = 17; b >= 0; --b){
            if(i + (1 << b) < (int)bit.size() && target - bit[i + (1 << b)] > 0){
                i += (1 << b);
                target -= bit[i];
 
 
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Compilation message (stderr)

foodcourt.cpp: In constructor 'min_prefix_segment_tree::min_prefix_segment_tree(int)':
foodcourt.cpp:39:34: warning: 'min_prefix_segment_tree::st' will be initialized after [-Wreorder]
   39 |     vector<pair<long long, int>> st;
      |                                  ^~
foodcourt.cpp:38:23: warning:   'std::vector<long long int> min_prefix_segment_tree::lazy' [-Wreorder]
   38 |     vector<long long> lazy;
      |                       ^~~~
foodcourt.cpp:41:5: warning:   when initialized here [-Wreorder]
   41 |     min_prefix_segment_tree(int n ): st(n << 2), lazy(n << 2) {}
      |     ^~~~~~~~~~~~~~~~~~~~~~~
foodcourt.cpp: In member function 'void min_prefix_segment_tree::build(int, int, int)':
foodcourt.cpp:46:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   46 |             int mid = l + r >> 1;
      |                       ~~^~~
foodcourt.cpp: In member function 'void min_prefix_segment_tree::update(int, int, int, int, int, long long int)':
foodcourt.cpp:69:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   69 |             int mid = l + r >> 1;
      |                       ~~^~~
foodcourt.cpp: In member function 'std::pair<long long int, int> min_prefix_segment_tree::query(int, int, int, int, int)':
foodcourt.cpp:79:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   79 |         int mid = l + r >> 1;
      |                   ~~^~~
foodcourt.cpp: In function 'int main()':
foodcourt.cpp:131:35: warning: narrowing conversion of 'b' from 'long long int' to 'int' [-Wnarrowing]
  131 |             queries[a].push_back({b, i});
      |                                   ^
foodcourt.cpp:147:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  147 |         for(auto [type, c, k, id] : updates[i]){
      |                  ^
foodcourt.cpp:157:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  157 |         for(auto [b, id] : queries[i]){
      |                  ^

• Subtask 1: 2 / 2
• Subtask 2: 0 / 5
• Subtask 3: 7 / 7
• Subtask 4: 0 / 21
• Subtask 5: 15 / 15
• Subtask 6: 0 / 13
• Subtask 7: 0 / 26
• Subtask 8: 0 / 11