oj.uz

Submission #62777

# Submission time Handle Problem Language Result Execution time Memory
62777 2018-07-30T03:26:57 Z qkxwsm Candies (JOI18_candies) C++17
100 / 100
 2117 ms 211568 KB 
/*
PROG: source
LANG: C++11
    _____
  .'     '.
 /  0   0  \
|     ^     |
|  \     /  |
 \  '---'  /
  '._____.'
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

struct chash
{
    int operator()(int x) const
	{
		x ^= (x >> 20) ^ (x >> 12);
    	return x ^ (x >> 7) ^ (x >> 4);
	}
	int operator()(long long x) const
	{
		return x ^ (x >> 32);
	}
};

template<typename T> using orderedset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using hashtable = gp_hash_table<T, U, chash>;

template<class T>
void readi(T &x)
{
	T input = 0;
	bool negative = false;
	char c = ' ';
	while (c < '-')
	{
		c = getchar();
	}
	if (c == '-')
	{
		negative = true;
		c = getchar();
	}
	while (c >= '0')
	{
		input = input * 10 + (c - '0');
		c = getchar();
	}
	if (negative)
	{
		input = -input;
	}
	x = input;
}
template<class T>
void printi(T output)
{
	if (output == 0)
	{
		putchar('0');
		return;
	}
	if (output < 0)
	{
		putchar('-');
		output = -output;
	}
	int aout[20];
	int ilen = 0;
	while(output)
	{
		aout[ilen] = ((output % 10));
		output /= 10;
		ilen++;
	}
	for (int i = ilen - 1; i >= 0; i--)
	{
		putchar(aout[i] + '0');
	}
	return;
}
template<class T>
void ckmin(T &a, T b)
{
	a = min(a, b);
}
template<class T>
void ckmax(T &a, T b)
{
	a = max(a, b);
}
template<class T>
T normalize(T x, T mod = 1000000007)
{
	return (((x % mod) + mod) % mod);
}
long long randomizell(long long mod)
{
	return ((1ll << 45) * rand() + (1ll << 30) * rand() + (1ll << 15) * rand() + rand()) % mod;
}
int randomize(int mod)
{
	return ((1ll << 15) * rand() + rand()) % mod;
}

#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define debug(x) cerr << #x << " = " << x << endl;

const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-10;

#define MAGIC 347
#define SINF 10007
#define CO 1000007
#define INF 1000000007
#define BIG 1000000931
#define LARGE 1696969696967ll
#define GIANT 2564008813937411ll
#define LLINF 2696969696969696969ll
#define MAXN 200013

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;

int N;
ll arr[MAXN];
vector<ll> seg[3 * MAXN][2][2];

void beat(vector<ll> &a, vector<ll> b)
{
    for (int i = 0; i < b.size(); i++)
    {
        ckmax(a[i], b[i]);
    }
    return;
}
vector<ll> comb(vector<ll> lt, vector<ll> rt)
{
    vector<ll> res(lt.size() + rt.size() - 1), bumps(lt.size() + rt.size() - 2);
    // for (int i = 0; i < lt.size(); i++)
    // {
    //     for (int j = 0; j < rt.size(); j++)
    //     {
    //         ckmax(res[i + j], lt[i] + rt[j]);
    //     }
    // }
    // return res;
    for (int i = 1; i < lt.size(); i++)
    {
        bumps[i - 1] = lt[i] - lt[i - 1];
    }
    for (int i = 1; i < rt.size(); i++)
    {
        bumps[lt.size() + i - 2] = rt[i] - rt[i - 1];
    }
    sort(bumps.begin(), bumps.end());
    reverse(bumps.begin(), bumps.end());
    res[0] = lt[0] + rt[0];
    for (int i = 1; i < res.size(); i++)
    {
        res[i] = res[i - 1] + bumps[i - 1];
    }
    return res;
}
void solve(int w, int L, int R)
{
    seg[w][0][0].resize((R - L + 2)/ 2);
    seg[w][0][1].resize((R - L + 3)/ 2);
    seg[w][1][0].resize((R - L + 3)/ 2);
    seg[w][1][1].resize((R - L + 4)/ 2);
    if (L == R)
    {
        seg[w][1][1][1] = arr[L];
        return;
    }
    int mid = (L + R) >> 1;
    solve(2 * w, L, mid);
    solve(2 * w + 1, mid + 1, R);
    for (int i = 0; i < 2; i++)
    {
        for (int j = 0; j < 2; j++)
        {
            beat(seg[w][i][j], comb(seg[2 * w][i][0], seg[2 * w + 1][0][j]));
            beat(seg[w][i][j], comb(seg[2 * w][i][0], seg[2 * w + 1][1][j]));
            beat(seg[w][i][j], comb(seg[2 * w][i][1], seg[2 * w + 1][0][j]));
        }
    }
    // cerr << "for " << L << ' ' << R << endl;
    // cerr << seg[w][1][1][1] << ' ' << seg[w][0][0][0] << endl;
    return;
}

int32_t main()
{
	ios_base::sync_with_stdio(0);
	srand(time(0));
	//	cout << fixed << setprecision(10);
	//	cerr << fixed << setprecision(10);
	if (fopen("input.in", "r"))
	{
		freopen ("input.in", "r", stdin);
		freopen ("output.out", "w", stdout);
	}
    cin >> N;
    for (int i = 0; i < N; i++)
    {
        cin >> arr[i];
    }
    solve(1, 0, N - 1);
    for (int i = 1; i <= (N + 1) / 2; i++)
    {
        cout << seg[1][1][1][i] << '\n';
    }
	//	cerr << "time elapsed = " << (clock() / (CLOCKS_PER_SEC / 1000)) << " ms" << endl;
	return 0;
}

Compilation message

candies.cpp: In function 'void beat(std::vector<long long int>&, std::vector<long long int>)':
candies.cpp:149:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < b.size(); i++)
                     ~~^~~~~~~~~~
candies.cpp: In function 'std::vector<long long int> comb(std::vector<long long int>, std::vector<long long int>)':
candies.cpp:166:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i < lt.size(); i++)
                     ~~^~~~~~~~~~~
candies.cpp:170:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i < rt.size(); i++)
                     ~~^~~~~~~~~~~
candies.cpp:177:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 1; i < res.size(); i++)
                     ~~^~~~~~~~~~~~
candies.cpp: In function 'int32_t main()':
candies.cpp:219:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen ("input.in", "r", stdin);
   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
candies.cpp:220:11: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen ("output.out", "w", stdout);
   ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 57464 KB Output is correct
2 Correct 66 ms 57712 KB Output is correct
3 Correct 62 ms 57712 KB Output is correct
4 Correct 64 ms 57712 KB Output is correct
5 Correct 70 ms 57712 KB Output is correct
6 Correct 67 ms 57788 KB Output is correct
7 Correct 68 ms 57852 KB Output is correct
8 Correct 65 ms 57972 KB Output is correct
9 Correct 65 ms 57972 KB Output is correct
10 Correct 64 ms 57988 KB Output is correct
11 Correct 67 ms 57988 KB Output is correct
12 Correct 68 ms 57988 KB Output is correct
13 Correct 63 ms 58060 KB Output is correct
14 Correct 64 ms 58128 KB Output is correct
15 Correct 78 ms 58128 KB Output is correct
16 Correct 64 ms 58188 KB Output is correct
17 Correct 68 ms 58208 KB Output is correct
18 Correct 64 ms 58208 KB Output is correct
19 Correct 83 ms 58208 KB Output is correct
20 Correct 79 ms 58292 KB Output is correct

Subtask #2
92.0 / 92.0

# Verdict Execution time Memory Grader output
1 Correct 65 ms 57464 KB Output is correct
2 Correct 66 ms 57712 KB Output is correct
3 Correct 62 ms 57712 KB Output is correct
4 Correct 64 ms 57712 KB Output is correct
5 Correct 70 ms 57712 KB Output is correct
6 Correct 67 ms 57788 KB Output is correct
7 Correct 68 ms 57852 KB Output is correct
8 Correct 65 ms 57972 KB Output is correct
9 Correct 65 ms 57972 KB Output is correct
10 Correct 64 ms 57988 KB Output is correct
11 Correct 67 ms 57988 KB Output is correct
12 Correct 68 ms 57988 KB Output is correct
13 Correct 63 ms 58060 KB Output is correct
14 Correct 64 ms 58128 KB Output is correct
15 Correct 78 ms 58128 KB Output is correct
16 Correct 64 ms 58188 KB Output is correct
17 Correct 68 ms 58208 KB Output is correct
18 Correct 64 ms 58208 KB Output is correct
19 Correct 83 ms 58208 KB Output is correct
20 Correct 79 ms 58292 KB Output is correct
21 Correct 2102 ms 158784 KB Output is correct
22 Correct 2037 ms 160752 KB Output is correct
23 Correct 2117 ms 162604 KB Output is correct
24 Correct 1699 ms 164568 KB Output is correct
25 Correct 1413 ms 166216 KB Output is correct
26 Correct 1676 ms 168168 KB Output is correct
27 Correct 1236 ms 170008 KB Output is correct
28 Correct 1368 ms 171732 KB Output is correct
29 Correct 1225 ms 173820 KB Output is correct
30 Correct 1308 ms 175876 KB Output is correct
31 Correct 1387 ms 177836 KB Output is correct
32 Correct 1524 ms 179688 KB Output is correct
33 Correct 1883 ms 181408 KB Output is correct
34 Correct 1673 ms 182988 KB Output is correct
35 Correct 1642 ms 184888 KB Output is correct
36 Correct 2037 ms 186796 KB Output is correct
37 Correct 2003 ms 188776 KB Output is correct
38 Correct 2062 ms 190568 KB Output is correct
39 Correct 1457 ms 192272 KB Output is correct
40 Correct 1409 ms 193988 KB Output is correct
41 Correct 1425 ms 195708 KB Output is correct
42 Correct 1236 ms 197532 KB Output is correct
43 Correct 1234 ms 199284 KB Output is correct
44 Correct 1253 ms 201284 KB Output is correct
45 Correct 1287 ms 203172 KB Output is correct
46 Correct 1381 ms 205112 KB Output is correct
47 Correct 1400 ms 206872 KB Output is correct
48 Correct 1636 ms 208312 KB Output is correct
49 Correct 1805 ms 210180 KB Output is correct
50 Correct 1698 ms 211568 KB Output is correct