oj.uz

답안 #98306

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
98306 2019-02-22T00:48:36 Z qkxwsm Pinball (JOI14_pinball) C++14
100 / 100
 364 ms 41448 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 1070013

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, pll> 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 27 ms 33792 KB Output is correct
2 Correct 27 ms 33920 KB Output is correct
3 Correct 34 ms 33920 KB Output is correct
4 Correct 28 ms 33920 KB Output is correct
5 Correct 27 ms 33792 KB Output is correct
6 Correct 27 ms 33912 KB Output is correct
7 Correct 32 ms 33920 KB Output is correct
8 Correct 28 ms 33912 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 33792 KB Output is correct
2 Correct 27 ms 33920 KB Output is correct
3 Correct 34 ms 33920 KB Output is correct
4 Correct 28 ms 33920 KB Output is correct
5 Correct 27 ms 33792 KB Output is correct
6 Correct 27 ms 33912 KB Output is correct
7 Correct 32 ms 33920 KB Output is correct
8 Correct 28 ms 33912 KB Output is correct
9 Correct 29 ms 33836 KB Output is correct
10 Correct 28 ms 33912 KB Output is correct
11 Correct 27 ms 33912 KB Output is correct
12 Correct 27 ms 33912 KB Output is correct
13 Correct 29 ms 33920 KB Output is correct
14 Correct 27 ms 33920 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 33792 KB Output is correct
2 Correct 27 ms 33920 KB Output is correct
3 Correct 34 ms 33920 KB Output is correct
4 Correct 28 ms 33920 KB Output is correct
5 Correct 27 ms 33792 KB Output is correct
6 Correct 27 ms 33912 KB Output is correct
7 Correct 32 ms 33920 KB Output is correct
8 Correct 28 ms 33912 KB Output is correct
9 Correct 29 ms 33836 KB Output is correct
10 Correct 28 ms 33912 KB Output is correct
11 Correct 27 ms 33912 KB Output is correct
12 Correct 27 ms 33912 KB Output is correct
13 Correct 29 ms 33920 KB Output is correct
14 Correct 27 ms 33920 KB Output is correct
15 Correct 26 ms 33920 KB Output is correct
16 Correct 29 ms 33920 KB Output is correct
17 Correct 29 ms 33952 KB Output is correct
18 Correct 26 ms 33912 KB Output is correct
19 Correct 28 ms 34040 KB Output is correct
20 Correct 32 ms 33920 KB Output is correct
21 Correct 29 ms 33912 KB Output is correct
22 Correct 31 ms 33920 KB Output is correct
23 Correct 36 ms 33920 KB Output is correct
24 Correct 30 ms 33920 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 33792 KB Output is correct
2 Correct 27 ms 33920 KB Output is correct
3 Correct 34 ms 33920 KB Output is correct
4 Correct 28 ms 33920 KB Output is correct
5 Correct 27 ms 33792 KB Output is correct
6 Correct 27 ms 33912 KB Output is correct
7 Correct 32 ms 33920 KB Output is correct
8 Correct 28 ms 33912 KB Output is correct
9 Correct 29 ms 33836 KB Output is correct
10 Correct 28 ms 33912 KB Output is correct
11 Correct 27 ms 33912 KB Output is correct
12 Correct 27 ms 33912 KB Output is correct
13 Correct 29 ms 33920 KB Output is correct
14 Correct 27 ms 33920 KB Output is correct
15 Correct 26 ms 33920 KB Output is correct
16 Correct 29 ms 33920 KB Output is correct
17 Correct 29 ms 33952 KB Output is correct
18 Correct 26 ms 33912 KB Output is correct
19 Correct 28 ms 34040 KB Output is correct
20 Correct 32 ms 33920 KB Output is correct
21 Correct 29 ms 33912 KB Output is correct
22 Correct 31 ms 33920 KB Output is correct
23 Correct 36 ms 33920 KB Output is correct
24 Correct 30 ms 33920 KB Output is correct
25 Correct 47 ms 34384 KB Output is correct
26 Correct 85 ms 34856 KB Output is correct
27 Correct 203 ms 36464 KB Output is correct
28 Correct 172 ms 37480 KB Output is correct
29 Correct 195 ms 35792 KB Output is correct
30 Correct 223 ms 37736 KB Output is correct
31 Correct 293 ms 37452 KB Output is correct
32 Correct 297 ms 37756 KB Output is correct
33 Correct 71 ms 34680 KB Output is correct
34 Correct 161 ms 35820 KB Output is correct
35 Correct 226 ms 37580 KB Output is correct
36 Correct 351 ms 41404 KB Output is correct
37 Correct 308 ms 41448 KB Output is correct
38 Correct 364 ms 41392 KB Output is correct