Submission #800423

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
800423	2023-08-01 14:38:39	fve5	Dynamic Diameter (CEOI19_diameter)	C++17	100 / 100	3152 ms	166144 KiB

diameter

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#include <bits/stdc++.h>
using namespace std;
constexpr int64_t INF = 2e18;
class SegTree {
    int size;
    vector<int64_t> arr, lazy;
    
    void update(int n, int nb, int ne) {
        if (lazy[n]) {
            arr[n] += lazy[n];
            
            if (nb + 1 != ne) {
                lazy[2 * n] += lazy[n];
                lazy[2 * n + 1] += lazy[n];
            }
            
            lazy[n] = 0;
        }
    }
    
    void add(int l, int r, int64_t d, int n, int nb, int ne) {
        update(n, nb, ne);
        if (nb >= r || ne <= l) return;
        if (l <= nb && ne <= r) {
            lazy[n] = d;
            update(n, nb, ne);
            return;
        }
 
 
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Compilation message (stderr)

diameter.cpp: In constructor 'SegTree::SegTree(std::vector<long int>)':
diameter.cpp:49:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         for (int i = 0; i < vals.size(); i++)
      |                         ~~^~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 13 / 13
• Subtask 3: 7 / 7
• Subtask 4: 18 / 18
• Subtask 5: 24 / 24
• Subtask 6: 27 / 27