oj.uz

Submission #882926

# Submission time Handle Problem Language Result Execution time Memory
882926 2023-12-04T07:30:38 Z NotLinux Palembang Bridges (APIO15_bridge) C++17
63 / 100
 2000 ms 10984 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// PUT IT BEFORE THE INCLUDE
#include <bits/stdc++.h>
using namespace std;
const long long inf = 1e18 + 7;
struct ONLINE_MEDIAN{
	long long sum1 = 0 , sum2 = 0;
	int sz = 0;
	multiset < int > s1,s2;
	inline void insert(int x){
		sum2 += x;
		s2.insert(x);
		sz++;
		while(s1.size() < ((sz+1)/2)){
			sum1 += *s2.begin();
			s1.insert(*s2.begin());
			sum2 -= *s2.begin();
			s2.erase(s2.begin());
		}
		while(s2.size() and *(--s1.end()) > *(s2.begin())){
			sum2 += *(--s1.end());
			s2.insert(*(--s1.end()));
			sum1 -= *(--s1.end());
			s1.erase(--s1.end());
			sum1 += *s2.begin();
			s1.insert(*s2.begin()),
			sum2 -= *s2.begin();
			s2.erase(s2.begin());
		}
	}
	inline void erase(int x){
		if(s1.count(x)){
			sum1 -= x;
			s1.erase(s1.find(x));
		}
		else {
			sum2 -= x;
			s2.erase(s2.find(x));
		}
		sz--;
		while(s1.size() > ((sz+1)/2)){
			sum2 += *(--s1.end());
			s2.insert(*(--s1.end())),
			sum1 -= *(--s1.end());
			s1.erase(--s1.end());
		}
		while(s1.size() < ((sz+1)/2)){
			sum1 += *(s2.begin());
			s1.insert(*s2.begin());
			sum2 -= *(s2.begin());
			s2.erase(s2.begin());
		}
		while(s2.size() and *(--s1.end()) > *(s2.begin())){
			sum2 += *(--s1.end());
			s2.insert(*(--s1.end()));
			sum1 -= *(--s1.end());
			s1.erase(--s1.end());
			sum1 += *s2.begin();
			s1.insert(*s2.begin()),
			sum2 -= *s2.begin();
			s2.erase(s2.begin());
		}
	}
	inline int get_median(){
		if(s1.empty())return 0;
		return *(--s1.end());
	}
	inline long long get_ans(){
		int medi = get_median();
		return (1ll * medi * s1.size() - sum1) + (sum2 - 1ll * medi * s2.size());
	}
	inline void debug(){
		cout << "set : ";
		for(auto itr : s1)cout << itr << " ";
		cout << "|";
		for(auto itr : s2)cout << itr << " ";
	}
};
bool cmp(array < int , 3 > const& a , array < int , 3 > const& b){
	return a[0] < b[0];
}
void solve(){
	int k,n;
	long long ans0 = 0;
	cin >> k >> n;
	vector < array < int , 3 > > v2;
	for(int i = 0;i<n;i++){
		char c1,c2;
		int p1,p2;
		cin >> c1 >> p1 >> c2 >> p2;
		if(c1 == c2){
			ans0 += abs(p1 - p2);
		}
		else{
			v2.push_back({p1 + p2 , p1 , p2});
		}
	}
	sort(v2.begin() , v2.end() , cmp);
	ONLINE_MEDIAN med1 , med2;
	for(auto itr : v2){
		med2.insert(itr[1]);
		med2.insert(itr[2]);
	}
	long long ans1 = inf;
	if(k == 1){
		ans1 = med2.get_ans();
	}
	else{
		for(auto itr : v2){
			med2.erase(itr[1]);
			med2.erase(itr[2]);
			med1.insert(itr[1]);
			med1.insert(itr[2]);
			ans1 = min(ans1 , med1.get_ans() + med2.get_ans());
		}
	}
	cout << ans0 + (ans1 == inf ? 0ll : ans1) + v2.size() << '\n';
}
signed main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int testcase = 1;//cin >> testcase;
	while(testcase--)solve();
}

Compilation message

bridge.cpp: In member function 'void ONLINE_MEDIAN::insert(int)':
bridge.cpp:15:19: warning: comparison of integer expressions of different signedness: 'std::multiset<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   15 |   while(s1.size() < ((sz+1)/2)){
      |         ~~~~~~~~~~^~~~~~~~~~~~
bridge.cpp: In member function 'void ONLINE_MEDIAN::erase(int)':
bridge.cpp:42:19: warning: comparison of integer expressions of different signedness: 'std::multiset<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |   while(s1.size() > ((sz+1)/2)){
      |         ~~~~~~~~~~^~~~~~~~~~~~
bridge.cpp:48:19: warning: comparison of integer expressions of different signedness: 'std::multiset<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   48 |   while(s1.size() < ((sz+1)/2)){
      |         ~~~~~~~~~~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 50 ms 10984 KB Output is correct
13 Correct 100 ms 10864 KB Output is correct
14 Correct 80 ms 9924 KB Output is correct
15 Correct 49 ms 6540 KB Output is correct
16 Correct 70 ms 10944 KB Output is correct
17 Correct 51 ms 10952 KB Output is correct
18 Correct 56 ms 10948 KB Output is correct
19 Correct 61 ms 10948 KB Output is correct
20 Correct 54 ms 10828 KB Output is correct
21 Correct 54 ms 10948 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 2 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 3 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 4 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 4 ms 348 KB Output is correct
14 Correct 4 ms 348 KB Output is correct
15 Correct 2 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 3 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 4 ms 348 KB Output is correct
24 Correct 1 ms 560 KB Output is correct
25 Execution timed out 2094 ms 10948 KB Time limit exceeded
26 Halted 0 ms 0 KB -