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Submission #641957

# Submission time Handle Problem Language Result Execution time Memory
641957 2022-09-18T02:10:06 Z gun_gan Palembang Bridges (APIO15_bridge) C++17
100 / 100
 92 ms 5704 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int N = 1e5 + 5;
int k, n;
ll same_side = 0, l = 0, r = 0, p[N], s[N], ans;
vector<pair<int,int>> v;
priority_queue<int> lf;
priority_queue<int, vector<int>, greater<int>> rg;

void push(int x) 
{
	if(lf.empty() || x <= lf.top()) {
		lf.push(x);
		l += x;
	} else {
		rg.push(x);
		r += x;
	}

	if((int)lf.size() - 1 > rg.size()) {
		int t = lf.top();
		l -= t;
		r += t;
		lf.pop();
		rg.push(t);
	} else if(lf.size() < rg.size()) {
		int t = rg.top();
		r -= t;
		l += t;
		rg.pop();
		lf.push(t);
	}
}

int main() 
{
	cin.tie(0); ios_base::sync_with_stdio(0);

	cin >> k >> n;
	for(int i = 0; i < n; i++) {
		char a, b;
		int x, y;
		cin >> a >> x >> b >> y;
		if(a == b) {
			same_side += abs(x - y);
		} else {
			v.push_back({x, y});
		}
	}

	sort(v.begin(), v.end(), [&](auto x, auto y){
		return x.first + x.second < y.first + y.second;
	});

	for(int i = 0; i < v.size(); i++) {
		push(v[i].first);
		push(v[i].second);
		p[i] = r - l;
	}

	ans = p[v.size() - 1];
	if(k == 1) {
		cout << same_side + ans + v.size() << '\n';
		return 0;
	}

	while(!lf.empty()) lf.pop();
	while(!rg.empty()) rg.pop();

	l = 0, r = 0;
	for(int i = v.size() - 1; i >= 0; i--) {
		push(v[i].first);
		push(v[i].second);
		ans = min(ans, r - l + (i == 0 ? 0 : p[i - 1]));
	}	

	cout << same_side + ans + v.size() << '\n';
}

Compilation message

bridge.cpp: In function 'void push(int)':
bridge.cpp:22:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::priority_queue<int, std::vector<int>, std::greater<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  if((int)lf.size() - 1 > rg.size()) {
      |     ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
bridge.cpp: In function 'int main()':
bridge.cpp:57:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |  for(int i = 0; i < v.size(); i++) {
      |                 ~~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 456 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 29 ms 3456 KB Output is correct
13 Correct 48 ms 3164 KB Output is correct
14 Correct 38 ms 3084 KB Output is correct
15 Correct 27 ms 2156 KB Output is correct
16 Correct 31 ms 3244 KB Output is correct
17 Correct 37 ms 3016 KB Output is correct
18 Correct 39 ms 3068 KB Output is correct
19 Correct 48 ms 3044 KB Output is correct
20 Correct 31 ms 3520 KB Output is correct
21 Correct 40 ms 3072 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 328 KB Output is correct
4 Correct 1 ms 328 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 328 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 328 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 328 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 1 ms 324 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 33 ms 3276 KB Output is correct
26 Correct 60 ms 4376 KB Output is correct
27 Correct 78 ms 5040 KB Output is correct
28 Correct 92 ms 5704 KB Output is correct
29 Correct 85 ms 5396 KB Output is correct
30 Correct 41 ms 2984 KB Output is correct
31 Correct 40 ms 4684 KB Output is correct
32 Correct 60 ms 5484 KB Output is correct
33 Correct 62 ms 5424 KB Output is correct
34 Correct 66 ms 5532 KB Output is correct
35 Correct 42 ms 5416 KB Output is correct
36 Correct 73 ms 5156 KB Output is correct
37 Correct 29 ms 3928 KB Output is correct