Submission #1119748

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1119748	2024-11-27 11:39:52	Requiem	Synchronization (JOI13_synchronization)	C++17	100 / 100	619 ms	40776 KiB

synchronization

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#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define inf 1e18
#define fi first
#define se second
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define endl '\n'
#define pi 3.14159265359
#define TASKNAME "synchronization"
using namespace std;
template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef vector<int> vi;
/**
Cho 1 cây N đỉnh.
Ta có các thao tác, bật tắt cạnh.
Ta có q truy vấn:
- với đỉnh u, hãy đếm số đỉnh từng cùng thành phần liên thông với u.
Bài này dùng observation:
 
 
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Compilation message (stderr)

synchronization.cpp: In member function 'void BinaryIndexedTree::update(long long int, long long int)':
synchronization.cpp:57:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         for(int i = id; i < BIT.size(); i += i & (-i)){
      |                         ~~^~~~~~~~~~~~
synchronization.cpp: At global scope:
synchronization.cpp:140:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  140 | main()
      | ^~~~
synchronization.cpp: In function 'int main()':
synchronization.cpp:144:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  144 |         freopen(TASKNAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
synchronization.cpp:145:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  145 |         freopen(TASKNAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40