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Submission #1083285

# Submission time Handle Problem Language Result Execution time Memory
1083285 2024-09-02T20:43:28 Z damamila Palembang Bridges (APIO15_bridge) C++14
22 / 100
 31 ms 6740 KB 
#include <bits/stdc++.h>

using namespace std;

#define int long long

priority_queue<int> lpq;
priority_queue<int, vector<int>, greater<int> > rpq;
int lsum = 0, rsum = 0;

void insrt(int x) {
	int med;
	if (lpq.size()) med = lpq.top();
	else med = 1e9;
	
	if (x <= med) {
		lpq.push(x);
		lsum += x;
	} else {
		rpq.push(x);
		rsum += x;
	}
	
	if (lpq.size() > rpq.size()+1) {
		int tmp = lpq.top();
		lpq.pop();
		rpq.push(tmp);
		lsum -= tmp;
		rsum += tmp;
	}
	
	if (rpq.size() > lpq.size()) {
		int tmp = rpq.top();
		rpq.pop();
		lpq.push(tmp);
		rsum -= tmp;
		lsum += tmp;
	}
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);  
	int k, n;
	cin >> k >> n;
	int m = 0;
	vector<tuple<int, int, int>> num;
	vector<int> all;
	int ans = 0;
	for (int i = 0; i < n; i++) {
		int a, b;
		char c, d;
		cin >> c >> a >> d >> b;
		if (c == d) {
			ans += abs(b-a);
		} else {
			m++;
			ans++;
			all.push_back(a);
			all.push_back(b);
			num.push_back({a+b, a, b});
		}
	}
	sort(all.begin(), all.end());
	if (k == 1) {
		int x = all[all.size()/2];
		for (int i : all) {
			ans += abs(i-x);
		}
		cout << ans << endl;
	} else {
		sort(num.begin(), num.end());
		//find prefixes
		vector<int> pref(m);
		for (int i = 0; i < m; i++) {
			auto [tot, a, b] = num[i];
			insrt(a);
			insrt(b);
			pref[i] = rsum-lsum;
		}
		//reset arrays
		int res = pref[m-1];
		rsum = 0, lsum = 0;
		while (lpq.size()) lpq.pop();
		while (rpq.size()) rpq.pop();
		//find suffixes and answer
		for (int i = m-1; i >= 0; i--) {
			auto [tot, a, b] = num[i];
			insrt(a);
			insrt(b);
			if (i > 0) res = min(res, rsum-lsum+pref[i-1]);
			else res = min(res, rsum-lsum);
		}
		cout << res+ans << endl;
	}
}

//changes infinities higher if wa

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:77:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   77 |    auto [tot, a, b] = num[i];
      |         ^
bridge.cpp:89:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   89 |    auto [tot, a, b] = num[i];
      |         ^

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 344 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 344 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 1 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 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 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 680 KB Output is correct
12 Correct 17 ms 5464 KB Output is correct
13 Correct 31 ms 6712 KB Output is correct
14 Correct 26 ms 5720 KB Output is correct
15 Correct 18 ms 4280 KB Output is correct
16 Correct 19 ms 5976 KB Output is correct
17 Correct 23 ms 6740 KB Output is correct
18 Correct 28 ms 6232 KB Output is correct
19 Correct 31 ms 6728 KB Output is correct
20 Correct 21 ms 6376 KB Output is correct
21 Correct 29 ms 6472 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 348 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -