oj.uz

답안 #98305

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
98305 2019-02-22T00:47:11 Z qkxwsm Pinball (JOI14_pinball) C++14
51 / 100
 289 ms 15620 KB 
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/rope>

using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;

random_device(rd);
mt19937 rng(rd());
const long long FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();

struct custom_hash
{
	template<class T>
	unsigned long long operator()(T v) const
	{
		unsigned long long x = v;
		x += FIXED_RANDOM;
		// x += 11400714819323198485ull;
		// x = (x ^ (x >> 30)) * 13787848793156543929ull;
		x = (x ^ (x >> 27)) * 10723151780598845931ull;
		return x ^ (x >> 31);
	}
};

template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<class T, class U> using hash_table = gp_hash_table<T, U, custom_hash>;

template<class T>
T randomize(T mod)
{
	return (uniform_int_distribution<T>(0, mod - 1))(rng);
}
template<class T>
void readi(T &x)
{
	x = 0;
	bool negative = false;
	char c = ' ';
	while (c < '-')
	{
		c = getchar();
	}
	if (c == '-')
	{
		negative = true;
		c = getchar();
	}
	while (c >= '0')
	{
		x = x * 10 + (c - '0');
		c = getchar();
	}
	if (negative)
	{
		x = -x;
	}
}
template<class T>
void printi(T output)
{
	if (output == 0)
	{
		putchar('0');
		return;
	}
	if (output < 0)
	{
		putchar('-');
		output = -output;
	}
	int buf[20], n = 0;
	while(output)
	{
		buf[n] = ((output % 10));
		output /= 10;
		n++;
	}
	for (n--; n >= 0; n--)
	{
		putchar(buf[n] + '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);
}
long long expo(long long a, long long e, long long mod)
{
	return ((e == 0) ? 1 : ((expo(a * a % mod, e >> 1, mod)) * ((e & 1) ? a : 1) % mod));
}
template<class T, class U>
void nmod(T &x, U mod)
{
	if (x >= mod) x -= mod;
}
template<class T>
T gcd(T a, T b)
{
	return (b ? gcd(b, a % b) : a);
}

#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define DBG(x) cerr << #x << " = " << (x) << endl
#define SZ(x) ((int) ((x).size()))
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)
#define ALL(x) (x).begin(), (x).end()

const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-9;

#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 270013

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;
typedef pair<pii, pii> ppp;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<ld> vd;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
typedef vector<pdd> vpd;

int N, M;
ppp arr[MAXN];
vi compress;
ll lt[MAXN], rt[MAXN];
ll ans = LLINF;

struct segtree
{
	ll seg[2 * MAXN];
	ll DNE = LLINF;
	ll comb(ll a, ll b)
	{
		return min(a, b);
	}
	void update(int w, int L, int R, int a, ll v)
	{
		if (a < L || R < a)
		{
			return;
		}
		if (L == R)
		{
			ckmin(seg[w], v);
			return;
		}
		int mid = (L + R) >> 1;
		update(w << 1, L, mid, a, v);
		update(w << 1 | 1, mid + 1, R, a, v);
		seg[w] = comb(seg[w << 1], seg[w << 1 | 1]);
		return;
	}
	ll query(int w, int L, int R, int a, int b)
	{
		if (b < L || R < a)
		{
			return DNE;
		}
		if (a <= L && R <= b)
		{
			return seg[w];
		}
		int mid = (L + R) >> 1;
		return comb(query(w << 1, L, mid, a, b), query(w << 1 | 1, mid + 1, R, a, b));
	}
};

segtree seg[2];

int32_t main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	// cout << fixed << setprecision(10);
	// cerr << fixed << setprecision(10);
	// if (fopen("file.in", "r"))
	// {
	// 	freopen ("file.in", "r", stdin);
	// 	freopen ("file.out", "w", stdout);
	// }
	cin >> N >> M;
	if (M == 1)
	{
		cout << "0\n";
		return 0;
	}
	FOR(i, 0, N)
	{
		cin >> arr[i].fi.fi >> arr[i].fi.se >> arr[i].se.fi >> arr[i].se.se;
		compress.PB(arr[i].fi.fi);
		compress.PB(arr[i].fi.se);
		compress.PB(arr[i].se.fi);
	}
	compress.PB(1); compress.PB(M);
	sort(ALL(compress));
	compress.erase(unique(ALL(compress)), compress.end());
	FOR(i, 0, N)
	{
		arr[i].fi.fi = LB(ALL(compress), arr[i].fi.fi) - compress.begin();
		arr[i].fi.se = LB(ALL(compress), arr[i].fi.se) - compress.begin();
		arr[i].se.fi = LB(ALL(compress), arr[i].se.fi) - compress.begin();
	}
	M = SZ(compress);
	FOR(i, 0, 2)
	{
		FOR(j, 0, 2 * MAXN)
		{
			seg[i].seg[j] = LLINF;
		}
	}
	seg[0].update(1, 0, M - 1, 0, 0);
	seg[1].update(1, 0, M - 1, M - 1, 0);
	FOR(i, 0, N)
	{
		ll lt = seg[0].query(1, 0, M - 1, arr[i].fi.fi, arr[i].fi.se);
		ll rt = seg[1].query(1, 0, M - 1, arr[i].fi.fi, arr[i].fi.se);
		seg[0].update(1, 0, M - 1, arr[i].se.fi, lt + arr[i].se.se);
		seg[1].update(1, 0, M - 1, arr[i].se.fi, rt + arr[i].se.se);
		ckmin(ans, lt + rt + arr[i].se.se);
		// DBG(res0); DBG(res1); DBG(arr[i].se.se);
	}
	ckmin(ans, seg[0].query(1, 0, M - 1, M - 1, M - 1));
	ckmin(ans, seg[1].query(1, 0, M - 1, 0, 0));
	if (ans >= GIANT) ans = -1;
	cout << ans << '\n';
	// FOR(i, 0, N)
	// {
	// 	cerr << arr[i].fi.fi << ' ' << arr[i].fi.se << ' ' << arr[i].se.fi << ' ' << arr[i].se.se << endl;
	// }
	//each time u do it, it's like saying, any range containing x can be expanded to y
	// cerr << "time elapsed = " << (clock() / (CLOCKS_PER_SEC / 1000)) << " ms" << endl;
	return 0;
}
/* READ READ READ
* int overflow, maxn too small, special cases (n=1?, two distinct?), cin.tie() interactive
* reread the problem, try small cases
* note down possible sources of error as you go
* do smth instead of nothing
*/

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 8832 KB Output is correct
2 Correct 10 ms 8832 KB Output is correct
3 Correct 8 ms 8704 KB Output is correct
4 Correct 10 ms 8832 KB Output is correct
5 Correct 10 ms 8960 KB Output is correct
6 Correct 8 ms 8832 KB Output is correct
7 Correct 9 ms 8832 KB Output is correct
8 Correct 9 ms 8832 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 8832 KB Output is correct
2 Correct 10 ms 8832 KB Output is correct
3 Correct 8 ms 8704 KB Output is correct
4 Correct 10 ms 8832 KB Output is correct
5 Correct 10 ms 8960 KB Output is correct
6 Correct 8 ms 8832 KB Output is correct
7 Correct 9 ms 8832 KB Output is correct
8 Correct 9 ms 8832 KB Output is correct
9 Correct 9 ms 8832 KB Output is correct
10 Correct 11 ms 8752 KB Output is correct
11 Correct 8 ms 8832 KB Output is correct
12 Correct 8 ms 8832 KB Output is correct
13 Correct 9 ms 8832 KB Output is correct
14 Correct 10 ms 8832 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 8832 KB Output is correct
2 Correct 10 ms 8832 KB Output is correct
3 Correct 8 ms 8704 KB Output is correct
4 Correct 10 ms 8832 KB Output is correct
5 Correct 10 ms 8960 KB Output is correct
6 Correct 8 ms 8832 KB Output is correct
7 Correct 9 ms 8832 KB Output is correct
8 Correct 9 ms 8832 KB Output is correct
9 Correct 9 ms 8832 KB Output is correct
10 Correct 11 ms 8752 KB Output is correct
11 Correct 8 ms 8832 KB Output is correct
12 Correct 8 ms 8832 KB Output is correct
13 Correct 9 ms 8832 KB Output is correct
14 Correct 10 ms 8832 KB Output is correct
15 Correct 8 ms 8832 KB Output is correct
16 Correct 8 ms 8832 KB Output is correct
17 Correct 10 ms 8704 KB Output is correct
18 Correct 10 ms 8832 KB Output is correct
19 Correct 10 ms 8832 KB Output is correct
20 Correct 10 ms 8832 KB Output is correct
21 Correct 10 ms 8832 KB Output is correct
22 Correct 10 ms 8832 KB Output is correct
23 Correct 11 ms 8832 KB Output is correct
24 Correct 9 ms 8832 KB Output is correct

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 8832 KB Output is correct
2 Correct 10 ms 8832 KB Output is correct
3 Correct 8 ms 8704 KB Output is correct
4 Correct 10 ms 8832 KB Output is correct
5 Correct 10 ms 8960 KB Output is correct
6 Correct 8 ms 8832 KB Output is correct
7 Correct 9 ms 8832 KB Output is correct
8 Correct 9 ms 8832 KB Output is correct
9 Correct 9 ms 8832 KB Output is correct
10 Correct 11 ms 8752 KB Output is correct
11 Correct 8 ms 8832 KB Output is correct
12 Correct 8 ms 8832 KB Output is correct
13 Correct 9 ms 8832 KB Output is correct
14 Correct 10 ms 8832 KB Output is correct
15 Correct 8 ms 8832 KB Output is correct
16 Correct 8 ms 8832 KB Output is correct
17 Correct 10 ms 8704 KB Output is correct
18 Correct 10 ms 8832 KB Output is correct
19 Correct 10 ms 8832 KB Output is correct
20 Correct 10 ms 8832 KB Output is correct
21 Correct 10 ms 8832 KB Output is correct
22 Correct 10 ms 8832 KB Output is correct
23 Correct 11 ms 8832 KB Output is correct
24 Correct 9 ms 8832 KB Output is correct
25 Correct 30 ms 9216 KB Output is correct
26 Correct 70 ms 9584 KB Output is correct
27 Correct 228 ms 10904 KB Output is correct
28 Correct 191 ms 11772 KB Output is correct
29 Correct 157 ms 10336 KB Output is correct
30 Correct 190 ms 11660 KB Output is correct
31 Correct 289 ms 11748 KB Output is correct
32 Correct 277 ms 11624 KB Output is correct
33 Correct 40 ms 9472 KB Output is correct
34 Correct 135 ms 10356 KB Output is correct
35 Incorrect 184 ms 15620 KB Output isn't correct
36 Halted 0 ms 0 KB -