| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 250420 |
2020-07-17T20:10:35 Z |
tutis |
Candies (JOI18_candies) |
C++17 |
|
5000 ms |
12720 KB |
/*input
5
3 5 1 7 6
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
vector<array<array<ll, 2>, 2>>ans(vector<ll>a)
{
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] = 0;
ret[0][1][0] = 0;
ret[0][0][1] = 0;
ret[0][0][0] = 0;
ret[1][1][0] = -1e15;
ret[1][0][1] = -1e15;
ret[1][0][0] = -1e15;
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] = -1e15;
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 < a.size(); 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] = -1e15;
}
}
}
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;
};
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;
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 function 'std::vector<std::array<std::array<long long int, 2>, 2> > ans(std::vector<long long int>)':
candies.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int j = i + 1; j < a.size(); j++)
~~^~~~~~~~~~
candies.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < ret.size(); i++)
~~^~~~~~~~~~~~
candies.cpp:59:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < K.size(); i++)
~~^~~~~~~~~~
candies.cpp:61:21: 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:67:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
assert(i + j < ret.size());
~~~~~~^~~~~~~~~~~~
candies.cpp:72:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (i + j + 1 < ret.size())
~~~~~~~~~~^~~~~~~~~~~~
candies.cpp:80:20: 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 |
Correct |
8 ms |
512 KB |
Output is correct |
| 2 |
Correct |
7 ms |
512 KB |
Output is correct |
| 3 |
Correct |
8 ms |
512 KB |
Output is correct |
| 4 |
Correct |
7 ms |
512 KB |
Output is correct |
| 5 |
Correct |
7 ms |
512 KB |
Output is correct |
| 6 |
Correct |
7 ms |
512 KB |
Output is correct |
| 7 |
Correct |
7 ms |
512 KB |
Output is correct |
| 8 |
Correct |
7 ms |
512 KB |
Output is correct |
| 9 |
Correct |
9 ms |
512 KB |
Output is correct |
| 10 |
Correct |
7 ms |
512 KB |
Output is correct |
| 11 |
Correct |
7 ms |
512 KB |
Output is correct |
| 12 |
Correct |
7 ms |
532 KB |
Output is correct |
| 13 |
Correct |
7 ms |
640 KB |
Output is correct |
| 14 |
Correct |
7 ms |
512 KB |
Output is correct |
| 15 |
Correct |
7 ms |
512 KB |
Output is correct |
| 16 |
Correct |
7 ms |
512 KB |
Output is correct |
| 17 |
Correct |
7 ms |
512 KB |
Output is correct |
| 18 |
Correct |
7 ms |
512 KB |
Output is correct |
| 19 |
Correct |
7 ms |
512 KB |
Output is correct |
| 20 |
Correct |
7 ms |
512 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
512 KB |
Output is correct |
| 2 |
Correct |
7 ms |
512 KB |
Output is correct |
| 3 |
Correct |
8 ms |
512 KB |
Output is correct |
| 4 |
Correct |
7 ms |
512 KB |
Output is correct |
| 5 |
Correct |
7 ms |
512 KB |
Output is correct |
| 6 |
Correct |
7 ms |
512 KB |
Output is correct |
| 7 |
Correct |
7 ms |
512 KB |
Output is correct |
| 8 |
Correct |
7 ms |
512 KB |
Output is correct |
| 9 |
Correct |
9 ms |
512 KB |
Output is correct |
| 10 |
Correct |
7 ms |
512 KB |
Output is correct |
| 11 |
Correct |
7 ms |
512 KB |
Output is correct |
| 12 |
Correct |
7 ms |
532 KB |
Output is correct |
| 13 |
Correct |
7 ms |
640 KB |
Output is correct |
| 14 |
Correct |
7 ms |
512 KB |
Output is correct |
| 15 |
Correct |
7 ms |
512 KB |
Output is correct |
| 16 |
Correct |
7 ms |
512 KB |
Output is correct |
| 17 |
Correct |
7 ms |
512 KB |
Output is correct |
| 18 |
Correct |
7 ms |
512 KB |
Output is correct |
| 19 |
Correct |
7 ms |
512 KB |
Output is correct |
| 20 |
Correct |
7 ms |
512 KB |
Output is correct |
| 21 |
Execution timed out |
5071 ms |
12720 KB |
Time limit exceeded |
| 22 |
Halted |
0 ms |
0 KB |
- |
