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Submission #381758

# Submission time Handle Problem Language Result Execution time Memory
381758 2021-03-25T20:44:43 Z wind_reaper Palembang Bridges (APIO15_bridge) C++17
100 / 100
 96 ms 5736 KB 
#include <bits/stdc++.h>

using namespace std;

priority_queue<int> lpq;
priority_queue<int, vector<int>, greater<int>> rpq;
int64_t L, R;

void insert(int x) {
	int median = (lpq.size() ? lpq.top() : 1000000001);
	if (x <= median) {
		lpq.push(x);
		L += x;
	} else {
		rpq.push(x);
		R += x;
	}

	if (rpq.size() + 1 < lpq.size()) {
		int nxt = lpq.top();
		lpq.pop();
		rpq.push(nxt);
		L -= nxt;
		R += nxt;
	} else if (lpq.size() < rpq.size()) {
		int nxt = rpq.top();
		rpq.pop();
		lpq.push(nxt);
		R -= nxt;
		L += nxt;
	}
}

int64_t pref[100001];

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int k, n;
	int64_t same_side = 0;
	vector<array<int, 2>> v = {{0, 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(), [](array<int, 2>&a, array<int, 2>&b){
		return (a[0] + a[1] < b[0] + b[1]);
	});
	
	n = v.size() - 1;
	same_side += n;

	L = R = 0;
	for(int i = 1; i < n + 1; i++) {
		insert(v[i][0]);
		insert(v[i][1]);
		pref[i] = R - L;
	}

	int64_t ans = pref[n];

	if (k == 2) {
		while (lpq.size()) lpq.pop();
		while (rpq.size()) rpq.pop();
		L = R = 0;

		for(int i = n; i; i--) {
			insert(v[i][0]);
			insert(v[i][1]);
			ans = min(ans, R - L + pref[i - 1]);
		}
	}
	cout << same_side + ans;
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 492 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 30 ms 3944 KB Output is correct
13 Correct 57 ms 5608 KB Output is correct
14 Correct 45 ms 4712 KB Output is correct
15 Correct 34 ms 3564 KB Output is correct
16 Correct 38 ms 4968 KB Output is correct
17 Correct 44 ms 5480 KB Output is correct
18 Correct 47 ms 5608 KB Output is correct
19 Correct 52 ms 5480 KB Output is correct
20 Correct 38 ms 5480 KB Output is correct
21 Correct 48 ms 5224 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 2 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 1 ms 364 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 2 ms 364 KB Output is correct
20 Correct 2 ms 384 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 3 ms 364 KB Output is correct
21 Correct 2 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 43 ms 3944 KB Output is correct
26 Correct 71 ms 4584 KB Output is correct
27 Correct 94 ms 5096 KB Output is correct
28 Correct 96 ms 5736 KB Output is correct
29 Correct 96 ms 5480 KB Output is correct
30 Correct 50 ms 3180 KB Output is correct
31 Correct 50 ms 4840 KB Output is correct
32 Correct 71 ms 5480 KB Output is correct
33 Correct 77 ms 5096 KB Output is correct
34 Correct 82 ms 5480 KB Output is correct
35 Correct 51 ms 5480 KB Output is correct
36 Correct 75 ms 5224 KB Output is correct
37 Correct 35 ms 3944 KB Output is correct