oj.uz

Submission #797523

# Submission time Handle Problem Language Result Execution time Memory
797523 2023-07-29T14:07:28 Z acatmeowmeow Palembang Bridges (APIO15_bridge) C++11
100 / 100
 292 ms 14584 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long 

const int N = 1e5;
int k, n, s[N + 5], t[N + 5];
char p[N + 5], q[N + 5];

namespace sub2 {

	int main(int n, int k, int s[], int t[], char p[], char q[]) {
		vector<int> arr;
		int init = 0;
		for (int i = 1; i <= n; i++) {
			if (p[i] == q[i]) init += abs(s[i] - t[i]);
			else arr.push_back(s[i]), arr.push_back(t[i]), init++;
		}
		sort(arr.begin(), arr.end());
		int ans = 0, mid = arr.size()/2;
		for (auto&v : arr) ans += abs(v - arr[mid]);
		return init + ans;
	}
}

namespace sub5 {

	void balance(multiset<int>&f, multiset<int>&se, int&fSum, int&seSum) {
		if (f.size() < se.size()) f.insert(*se.begin()), fSum += *se.begin(), seSum -= *se.begin(), se.erase(se.find(*se.begin()));
		else if (f.size() > se.size() + 1) se.insert(*f.rbegin()), seSum += *f.rbegin(), fSum -= *f.rbegin(), f.erase(f.find(*f.rbegin()));
	}

	int compute(multiset<int>&f, multiset<int>&se, int&fSum, int&seSum) {
		if(f.empty()) return 1e9;
		int median = *f.rbegin(), fSz = f.size(), seSz = se.size();
		return median*fSz - fSum + seSum - seSz*median;
	}

	void add(multiset<int>&f, multiset<int>&se, int&fSum, int&seSum, int v) {
		if (f.empty() || v <= *f.rbegin()) f.insert(v), fSum += v;
		else se.insert(v), seSum += v;
		balance(f, se, fSum, seSum);
	}

	void remove(multiset<int>&f, multiset<int>&se, int&fSum, int&seSum, int v) {
		if (f.find(v) != f.end()) f.erase(f.find(v)), fSum -= v;
		else se.erase(se.find(v)), seSum -= v;
		balance(f, se, fSum, seSum);
	}

	int main(int n, int k, int s[], int t[], char p[], char q[]) {
		vector<int> arr;
		int init = 0;
		for (int i = 1; i <= n; i++){
			if (p[i] == q[i]) init += abs(s[i] - t[i]);
			else arr.push_back(i), init++;
		}
		sort(arr.begin(), arr.end(), [&](int a, int b) { return s[a] + t[a] < s[b] + t[b]; });
		multiset<int> f, se, thi, four;
		int fSum = 0, seSum = 0, thiSum = 0, fourSum = 0;
		for (int i = 0; i < arr.size(); i++) {
			add(thi, four, thiSum, fourSum, s[arr[i]]);
			add(thi, four, thiSum, fourSum, t[arr[i]]);
		}	
		int ans = compute(thi, four, thiSum, fourSum);
		for (int i = 0; i < arr.size(); i++) {
			remove(thi, four, thiSum, fourSum, s[arr[i]]);
			remove(thi, four, thiSum, fourSum, t[arr[i]]);
			add(f, se, fSum, seSum, s[arr[i]]);
			add(f, se, fSum, seSum, t[arr[i]]);
			ans = min(ans, compute(f, se, fSum, seSum) + compute(thi, four, thiSum, fourSum));
		}
		return init + ans;	
	}
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cin >> k >> n;
	for (int i = 1; i <= n; i++) cin >> p[i] >> s[i] >> q[i] >> t[i];
	int ans = sub2::main(n, k, s, t, p, q);
	if (k == 2) ans = min(ans, sub5::main(n, k, s, t, p, q));
	cout << ans << '\n';
	return 0;
}

Compilation message

bridge.cpp: In function 'long long int sub5::main(long long int, long long int, long long int*, long long int*, char*, char*)':
bridge.cpp:62:21: 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]
   62 |   for (int i = 0; i < arr.size(); i++) {
      |                   ~~^~~~~~~~~~~~
bridge.cpp:67:21: 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]
   67 |   for (int i = 0; i < arr.size(); i++) {
      |                   ~~^~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 336 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 348 KB Output is correct
11 Correct 1 ms 468 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 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 344 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 15 ms 4944 KB Output is correct
13 Correct 33 ms 5388 KB Output is correct
14 Correct 24 ms 5200 KB Output is correct
15 Correct 19 ms 3652 KB Output is correct
16 Correct 19 ms 5336 KB Output is correct
17 Correct 23 ms 5412 KB Output is correct
18 Correct 28 ms 5320 KB Output is correct
19 Correct 32 ms 5372 KB Output is correct
20 Correct 21 ms 5320 KB Output is correct
21 Correct 28 ms 5396 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 336 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 0 ms 340 KB Output is correct
7 Correct 1 ms 328 KB Output is correct
8 Correct 1 ms 336 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 0 ms 328 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 328 KB Output is correct
2 Correct 1 ms 340 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 332 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 2 ms 468 KB Output is correct
15 Correct 2 ms 468 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 340 KB Output is correct
19 Correct 1 ms 480 KB Output is correct
20 Correct 1 ms 372 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 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 336 KB Output is correct
8 Correct 1 ms 328 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 2 ms 480 KB Output is correct
15 Correct 2 ms 468 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 340 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 143 ms 12960 KB Output is correct
26 Correct 234 ms 13208 KB Output is correct
27 Correct 292 ms 13972 KB Output is correct
28 Correct 285 ms 14516 KB Output is correct
29 Correct 276 ms 14480 KB Output is correct
30 Correct 127 ms 8044 KB Output is correct
31 Correct 128 ms 13972 KB Output is correct
32 Correct 149 ms 14448 KB Output is correct
33 Correct 118 ms 14164 KB Output is correct
34 Correct 173 ms 14584 KB Output is correct
35 Correct 155 ms 14032 KB Output is correct
36 Correct 166 ms 14228 KB Output is correct
37 Correct 141 ms 12976 KB Output is correct