Submission #1150051

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1150051	2025-02-13 16:45:19	CodeLakVN	Dynamic Diameter (CEOI19_diameter)	C++20	0 / 100	58 ms	42248 KiB

diameter

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#include <bits/stdc++.h>
using namespace std;
#define task "DIAMETER"
#define FOR(i, a, b) for (int i = (a); i <= (b); i++)
#define FOD(i, a, b) for (int i = (a); i >= (b); i--)
#define F first
#define S second
#define ll long long 
typedef pair<int, ll> il;
typedef pair<int, int> ii;
const int N = 1e5 + 5;
struct IT {
    vector<ll> tree, lazy;
    int n;
    void init(int _n) {
        n = _n;
        tree.assign(4 * n + 3, 0);
        lazy.assign(4 * n + 3, 0);
    }
    void down(int id) {
        if (lazy[id] == 0) return;
        ll s = lazy[id];
        tree[2 * id] += s;
        lazy[2 * id] += s;
 
 
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Compilation message (stderr)

diameter.cpp: In function 'int main()':
diameter.cpp:208:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  208 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
diameter.cpp:209:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  209 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 13
• Subtask 3: 0 / 7
• Subtask 4: 0 / 18
• Subtask 5: 0 / 24
• Subtask 6: 0 / 27