Submission #250418

# Submission time Handle Problem Language Result Execution time Memory
250418 2020-07-17T20:08:05 Z tutis Candies (JOI18_candies) C++17
0 / 100
478 ms 524292 KB
/*input
5
3 5 1 7 6
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0), cout.tie(0);
	int n;
	cin >> n;
	vector<ll>a(n);
	for (ll&i : a)
		cin >> i;
	function<vector<array<array<ll, 2>, 2>>(vector<ll>)>ans = [&](vector<ll>a) -> vector<array<array<ll, 2>, 2>>
	{
		assert(!a.empty());
		if (a.size() == 1)
		{
			vector<array<array<ll, 2>, 2>>ret(2);
			ret[1][1][1] = a[0];
			ret[0][1][1] = a[0];
			ret[0][1][0] = 0;
			ret[0][0][1] = 0;
			ret[0][0][0] = 0;
			ret[1][1][0] = 0;
			ret[1][0][1] = 0;
			ret[1][0][0] = 0;
			return ret;
		}
		if (a.size() == 2)
		{
			vector<array<array<ll, 2>, 2>>ret(2);
			ret[1][1][1] = max(a[0], a[1]);
			ret[1][1][0] = a[0];
			ret[1][0][1] = a[1];
			ret[1][0][0] = 0;
			ret[0][1][1] = 0;
			ret[0][1][0] = 0;
			ret[0][0][1] = 0;
			ret[0][0][0] = 0;
			return ret;
		}
		int i = (a.size()) / 2;
		ll xxx = a[i];
		vector<ll>k;
		vector<ll>d;
		for (int j = 0; j < i; j++)
			k.push_back(a[j]);
		for (int j = i + 1; j < n; j++)
			d.push_back(a[j]);
		auto K = ans(k);
		auto D = ans(d);
		vector<array<array<ll, 2>, 2>>ret(((int)a.size() + 3) / 2);
		for (int i = 0; i < ret.size(); i++)
		{
			for (int x : {0, 1})
			{
				for (int y : {0, 1})
				{
					ret[i][x][y] = 0;
				}
			}
		}
		for (int i = 0; i < K.size(); i++)
		{
			for (int j = 0; j < D.size(); j++)
			{
				for (int x : {0, 1})
				{
					for (int y : {0, 1})
					{
						assert(i + j < ret.size());
						ret[i + j][x][y] = max(
						                       ret[i + j][x][y],
						                       K[i][x][1] + D[j][1][y]
						                   );
						if (i + j + 1 < ret.size())
							ret[i + j + 1][x][y] = max(ret[i + j + 1][x][y],
							                           K[i][x][0] + D[j][0][y] + xxx
							                          );
					}
				}
			}
		}
		for (int i = 0; i < ret.size(); i++)
		{
			ret[i][0][1] = max(ret[i][0][1], ret[i][0][0]);
			ret[i][1][0] = max(ret[i][1][0], ret[i][0][0]);
			ret[i][1][1] = max({ret[i][1][1], ret[i][0][1], ret[i][1][0]});
		}
		return ret;
	};
	vector<array<array<ll, 2>, 2>>x = ans(a);
	for (int i = 1; i <= (n + 1) / 2; i++)
	{
		cout << x[i][1][1] << "\n";
	}
	return 0;
}

Compilation message

candies.cpp: In lambda function:
candies.cpp:58:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < ret.size(); i++)
                   ~~^~~~~~~~~~~~
candies.cpp:68:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < K.size(); i++)
                   ~~^~~~~~~~~~
candies.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = 0; j < D.size(); j++)
                    ~~^~~~~~~~~~
In file included from /usr/include/c++/7/cassert:44:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:33,
                 from candies.cpp:5:
candies.cpp:76:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       assert(i + j < ret.size());
              ~~~~~~^~~~~~~~~~~~
candies.cpp:81:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if (i + j + 1 < ret.size())
           ~~~~~~~~~~^~~~~~~~~~~~
candies.cpp:89:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < ret.size(); i++)
                   ~~^~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Runtime error 478 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 478 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -