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Submission #338323

# Submission time Handle Problem Language Result Execution time Memory
338323 2020-12-23T02:39:32 Z lohacho Teams (CEOI11_tea) C++14
90 / 100
 531 ms 262148 KB 
#include <bits/stdc++.h>

using namespace std;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int N;
	cin >> N;
	vector<pair<int, int>> a(N);
	for(int i = 0; i < N; ++i){
		cin >> a[i].first;
		a[i].second = i;
	}
	sort(a.begin(), a.end());
	reverse(a.begin(), a.end());
	vector<vector<int>> dp(N, vector<int>(3, -(int)1e9));
	vector<vector<int>> look(N);
	vector<int> nnow = {1, -a[0].first, -2};
	dp[a[0].first - 1] = nnow;
	for(int i = 0; i < N; ++i){
		for(auto&j:look[i]){
			vector<int> now = {dp[j][0] + 1, -max(-dp[j][1], i - j), j - 1};
			dp[i] = max(dp[i], now);
		}
		if(i){
			vector<int> now = {dp[i - 1][0], -(-dp[i - 1][1] + (i == dp[i - 1][0] * -dp[i - 1][1])), i - 1};
			dp[i] = max(dp[i], now);
		}
		if(i < N - 1 && i + a[i + 1].first < N){
			look[i + a[i + 1].first].push_back(i);
		}
	}
	vector<vector<int>> teams;
	vector<int> pmin;
	priority_queue<pair<int, int>> pq;
	function<void(int)> f = [&](int x){
		if(x < 0){
			return;
		}
		if(dp[x][2] < x - 1){
			++dp[x][2];
			f(dp[x][2]);
			vector<int> np(x - dp[x][2]);
			for(int j = x; j > dp[x][2]; --j){
				np[x - j] = a[j].second;
			}
			pq.push({-(int)np.size(), (int)teams.size()});
			teams.push_back(np);
		}
		else{
			f(x - 1);
			int top = pq.top().second; pq.pop();
			teams[top].push_back(a[x].second);
			pq.push({-(int)teams[top].size(), top});
		}
	};
	f(N - 1);
	cout << (int)teams.size() << '\n';
	for(auto&i:teams){
		cout << (int)i.size() << ' ';
		for(auto&j:i){
			cout << j + 1 << ' ';
		}
		cout << '\n';
	}
	return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct

Subtask #2
10.0 / 10.0

# 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

Subtask #3
10.0 / 10.0

# 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

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1004 KB Output is correct
2 Correct 5 ms 1132 KB Output is correct
3 Correct 3 ms 1132 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 876 KB Output is correct
2 Correct 3 ms 1004 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 10988 KB Output is correct
2 Correct 39 ms 10988 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 12524 KB Output is correct
2 Correct 41 ms 10732 KB Output is correct
3 Correct 50 ms 12396 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 380 ms 97388 KB Output is correct
2 Correct 376 ms 101716 KB Output is correct
3 Correct 372 ms 102688 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 507 ms 130444 KB Output is correct
2 Runtime error 484 ms 262148 KB Execution killed with signal 9 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 484 ms 117684 KB Output is correct
2 Correct 348 ms 97320 KB Output is correct
3 Correct 531 ms 128876 KB Output is correct
4 Correct 523 ms 132356 KB Output is correct