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Submission #951084

# Submission time Handle Problem Language Result Execution time Memory
951084 2024-03-21T06:13:25 Z Amaarsaa Palembang Bridges (APIO15_bridge) C++14
22 / 100
 37 ms 5796 KB 
#include<bits/stdc++.h>

using namespace std;
using ll = long long ;
ll Pre[100005], Suf[100005];

void DBack(multiset<ll>& A) {
	auto P = A.end();
	P --;
	A.erase(P);
	return ;
}
ll Ed(multiset<ll>&A) {
	auto P = A.end();
	P --;
	return *P;
}
bool cmp(auto& A, auto& B) {
	return A.first + A.second < B.first + B.second;
}
multiset < ll > deer, door;
ll	deer_sum =0, door_sum =0;
void Insert(ll x) {
	if ( door.size() == deer.size()) {
		if (deer.empty() || *deer.begin() >= x) door.insert(x), door_sum += x;
		else {
			door_sum += *deer.begin();
			deer_sum -= *deer.begin();
			deer_sum += x;
			door.insert(*deer.begin());
			deer.erase(deer.begin());
			deer.insert(x);
		}
	}
	else {
		if ( Ed(door) <= x) {
			deer.insert(x);
			deer_sum += x;
		}
		else {
			deer_sum += Ed(door);
			door_sum -= Ed(door);
			door_sum += x;
			deer.insert(Ed(door));
			DBack(door);
			door.insert(x);
		}
	}
} 
int main() {
//	freopen("hayfeast.in", "r", stdin);
//	freopen("hayfeast.out", "w", stdout);
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	ll t, n, m, ans, s,sum, x, y, r, p, i, j, cnt = 0;

	cin >> n >> m;
	
	ans = 0;
	
	sum = 0;
	char ch1, ch2;
	vector < ll > v;
	vector < pair < ll, ll > > q;
	for (i = 1; i <= m; i ++) {
		cin >> ch1 >> x >> ch2 >> y;
		if ( ch1 == ch2) {
			ans += abs(x - y);
			sum += abs(x - y);
		}
		else {
			v.push_back(x);
			v.push_back(y);
			q.push_back({x, y});
		}
	}
	sort(v.begin(), v.end());
	s = v.size();
	s = (s + 1)/2 - 1;
	if ( n == 2) {
		sort(q.begin(), q.end());
		
		for (i = 0; i < q.size(); i ++) {
			Insert(q[i].first);
			Insert(q[i].second);
			
			if ( i % 2 == 0) s = Ed(door) + (deer_sum - door_sum);
			else s = deer_sum - door_sum;
			Pre[i] = s;
 		}
 		door.clear();
 		deer.clear();
 		deer_sum = door_sum =0;
 		ans = Pre[q.size() - 1];
		for (i = q.size() - 1; i >= 0; i --) {
			Insert(q[i].first);
			Insert(q[i].second);
			if ( i % 2 == 0) s = Ed(door) + (deer_sum - door_sum);
			else s = deer_sum - door_sum;
			Suf[i] = s;
			if (i == 0) ans = min(ans, Suf[i]);
			else ans =min(ans, Suf[i] + Pre[i - 1]);
 		}
 		cout << ans + q.size()  + sum<< endl;
		return 0;
	}
	for (i = 0; i < v.size(); i ++) {
		ans = ans + abs(v[s] - v[i]);
	}
	cout << ans + v.size()/2<< endl;
}

Compilation message

bridge.cpp:18:10: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | bool cmp(auto& A, auto& B) {
      |          ^~~~
bridge.cpp:18:19: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | bool cmp(auto& A, auto& B) {
      |                   ^~~~
bridge.cpp: In function 'int main()':
bridge.cpp:83:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |   for (i = 0; i < q.size(); i ++) {
      |               ~~^~~~~~~~~~
bridge.cpp:107:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  107 |  for (i = 0; i < v.size(); i ++) {
      |              ~~^~~~~~~~~~
bridge.cpp:55:5: warning: unused variable 't' [-Wunused-variable]
   55 |  ll t, n, m, ans, s,sum, x, y, r, p, i, j, cnt = 0;
      |     ^
bridge.cpp:55:32: warning: unused variable 'r' [-Wunused-variable]
   55 |  ll t, n, m, ans, s,sum, x, y, r, p, i, j, cnt = 0;
      |                                ^
bridge.cpp:55:35: warning: unused variable 'p' [-Wunused-variable]
   55 |  ll t, n, m, ans, s,sum, x, y, r, p, i, j, cnt = 0;
      |                                   ^
bridge.cpp:55:41: warning: unused variable 'j' [-Wunused-variable]
   55 |  ll t, n, m, ans, s,sum, x, y, r, p, i, j, cnt = 0;
      |                                         ^
bridge.cpp:55:44: warning: unused variable 'cnt' [-Wunused-variable]
   55 |  ll t, n, m, ans, s,sum, x, y, r, p, i, j, cnt = 0;
      |                                            ^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 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 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

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 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 0 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 16 ms 3772 KB Output is correct
13 Correct 32 ms 3780 KB Output is correct
14 Correct 23 ms 3784 KB Output is correct
15 Correct 19 ms 2504 KB Output is correct
16 Correct 18 ms 3780 KB Output is correct
17 Correct 23 ms 3784 KB Output is correct
18 Correct 29 ms 3732 KB Output is correct
19 Correct 37 ms 3780 KB Output is correct
20 Correct 21 ms 3784 KB Output is correct
21 Correct 28 ms 5796 KB Output is correct

Subtask #3
0 / 9.0

# 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 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# 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 0 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -