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Submission #167943

# Submission time Handle Problem Language Result Execution time Memory
167943 2019-12-11T00:56:34 Z Thuleanx Tree Rotations (POI11_rot) C++14
18 / 100
 1000 ms 65540 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 2e5+7;
int n;

struct BIT {
	vector<int> tree;
	vector<int> elems;
	BIT() {
		tree = vector<int>(N,0);
	}
	void add(int v) {
		elems.push_back(v);
		for (; v < n; v|=v+1)
			tree[v]++;
	}
	int sum(int v) {
		int ans = 0;
		for (; v >= 0; v = (v&(v+1))-1)
			ans += tree[v];
		return ans;
	}
	int merge(BIT &other) {
		int ans = 0;
		for (int x : other.elems)
			ans += sum(x);
		for (int x : other.elems)
			add(x);
		return ans;
	}
};

int merge(BIT &a, BIT &b) {
	if (a.elems.size() < b.elems.size())
		swap(a,b);
	int y = a.elems.size() * b.elems.size();
	int x = a.merge(b);
	return min(x, y-x);
}

BIT solve(int &ans) {
	int x; cin>>x;
	if (x) {
		BIT ds;		
		ds.add(x-1);
		return ds;
	} else {
		BIT a = solve(ans), b = solve(ans);
		ans += merge(a,b);
		return a.elems.size()>b.elems.size() ? a : b;
	}
}


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

	cin >> n;
	int ans = 0;
	solve(ans);
	cout << ans << endl;

	return 0;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 5872 KB Output is correct
2 Correct 13 ms 6688 KB Output is correct
3 Correct 14 ms 5824 KB Output is correct
4 Correct 12 ms 4984 KB Output is correct
5 Correct 4 ms 2680 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 7420 KB Output is correct
2 Correct 66 ms 24584 KB Output is correct
3 Correct 66 ms 10476 KB Output is correct
4 Correct 63 ms 19980 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 402 ms 19064 KB Output is correct
2 Correct 464 ms 18512 KB Output is correct
3 Correct 425 ms 10584 KB Output is correct
4 Runtime error 68 ms 65536 KB Execution killed with signal 9 (could be triggered by violating memory limits)

Subtask #4
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 276 ms 65540 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 73 ms 65540 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1065 ms 49888 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #7
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 92 ms 65540 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 63 ms 65540 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1064 ms 10612 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 66 ms 65540 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 73 ms 65540 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -