結果

問題 No.1996 <><
ユーザー daut-dlangdaut-dlang
提出日時 2022-07-01 23:25:08
言語 D
(dmd 2.106.1)
結果
AC  
実行時間 955 ms / 2,000 ms
コード長 4,117 bytes
コンパイル時間 1,000 ms
コンパイル使用メモリ 130,608 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-06-22 15:39:39
合計ジャッジ時間 11,131 ms
ジャッジサーバーID
(参考情報)
judge1 / judge2
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 1 ms
6,812 KB
testcase_01 AC 1 ms
6,940 KB
testcase_02 AC 1 ms
6,940 KB
testcase_03 AC 1 ms
6,944 KB
testcase_04 AC 1 ms
6,940 KB
testcase_05 AC 1 ms
6,940 KB
testcase_06 AC 1 ms
6,940 KB
testcase_07 AC 1 ms
6,940 KB
testcase_08 AC 3 ms
6,940 KB
testcase_09 AC 1 ms
6,940 KB
testcase_10 AC 2 ms
6,940 KB
testcase_11 AC 465 ms
6,944 KB
testcase_12 AC 955 ms
6,940 KB
testcase_13 AC 881 ms
6,940 KB
testcase_14 AC 848 ms
6,940 KB
testcase_15 AC 699 ms
6,944 KB
testcase_16 AC 612 ms
6,940 KB
testcase_17 AC 740 ms
6,944 KB
testcase_18 AC 400 ms
6,944 KB
testcase_19 AC 481 ms
6,940 KB
testcase_20 AC 473 ms
6,940 KB
testcase_21 AC 624 ms
6,944 KB
testcase_22 AC 764 ms
6,940 KB
testcase_23 AC 29 ms
6,940 KB
testcase_24 AC 409 ms
6,940 KB
testcase_25 AC 194 ms
6,940 KB
testcase_26 AC 339 ms
6,940 KB
testcase_27 AC 72 ms
6,944 KB
testcase_28 AC 1 ms
6,944 KB
testcase_29 AC 179 ms
6,940 KB
testcase_30 AC 10 ms
6,944 KB
testcase_31 AC 75 ms
6,940 KB
testcase_32 AC 4 ms
6,944 KB
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ソースコード

diff #

import std.stdio, std.conv, std.functional, std.string;
import std.algorithm, std.array, std.container, std.range, std.typecons;
import std.bigint, std.numeric, std.math, std.random;
import core.bitop;

string FMT_F = "%.10f";

static File _f;
void file_io(string fn) { _f = File(fn, "r"); }
static string[] s_rd;
T _RD(T = long)() { while(!s_rd.length) s_rd = readln.chomp.split; string res = s_rd[0]; s_rd.popFront; return res.to!T; }
T _RD(T = long)(File f) { while(!s_rd.length) s_rd = f.readln.chomp.split; string res = s_rd[0]; s_rd.popFront; return res.to!T; }
T[] _RDA(T = long)(T fix = 0) { auto r = readln.chomp.split.to!(T[]); r[] += fix; return r; }
T[] _RDA(T = long)(File f, T fix = 0) { auto r = f.readln.chomp.split.to!(T[]); r[] += fix; return r; }
T RD(T = long)() { if (_f.isOpen) return _RD!T(_f); else return _RD!T; }
T[] RDA(T = long)(T fix = 0) { if (_f.isOpen)  return _RDA!T(_f, fix); else return _RDA!T(fix); }

size_t[] MAKE_IDX(alias less = "a < b", Range)(Range range) { auto idx = new size_t[](range.length); makeIndex!(less)(range, idx); return idx;}
size_t MIN_POS(alias less = "a < b", Range)(Range range) { auto r = minPos!(less)(range); return range.length - r.length; }

void chmin(T)(ref T x, T y) { x = min(x, y); } void chmax(T)(ref T x, T y) { x = max(x, y); }
bool inside(T)(T x, T b, T e) { return x >= b && x < e; }
T lcm(T)(T x, T y) { return x * (y / gcd(x, y)); }
double euDist(T)(T[] a, T[] b) { auto c = a.dup; c[] -= b[]; c[] *= c[]; return sqrt(cast(double)c.sum); }
double[] rotate(double[] vec, double rad) { return [cos(rad)*vec[0] - sin(rad)*vec[1], sin(rad)*vec[0] + cos(rad)*vec[1]]; }
double norm(double[] vec) { return sqrt(reduce!((a,b)=>a+b*b)(0.0, vec)); }
double dotProd(double[] a, double[] b) { auto r = a.dup; r[] *= b[]; return r.sum; }

long mod = 10^^9 + 7;
//long mod = 998_244_353;
//long mod = 1_000_003;
void moda(ref long x, long y) { x = (x + y) % mod; }
void mods(ref long x, long y) { x = ((x + mod) - (y % mod)) % mod; }
void modm(ref long x, long y) { x = (x * y) % mod; }
void modpow(ref long x, long y) { if (!y) { x = 1; return; } auto t = x; x.modpow(y>>1); x.modm(x); if (y&1) x.modm(t); }
void modd(ref long x, long y) { y.modpow(mod - 2); x.modm(y); }

long compress(in long[] arr, out long[long] zip, out long[] unzip)
{
	auto index = MAKE_IDX(arr);
	long last = arr[index[0]], x;
	zip[last] = x;
	unzip ~= last;
	foreach (i; index[1..$])
	{
		if (arr[i] == last) continue;
		last = arr[i];
		++x;
		zip[last] = x;
		unzip ~= last;
	}
	return x+1;
}

struct SegTree(T)
{
	T delegate(const(T), const(T)) f;
	T[] data;
	T init;
    this(T[] _data, T delegate(const(T), const(T)) _f, T _init)
    {
		f = _f; init = _init;
		size_t n = 1; while (n < _data.length) n *= 2; data.length = n*2-1;
		foreach (i; 0.._data.length) data[i+n-1] = _data[i];
		foreach (i; _data.length..n) data[i+n-1] = _init;
		foreach_reverse (i; 0..n-1) data[i] = f(data[i*2+1], data[i*2+2]);
	}
    T query(size_t l, size_t r)
	{
        size_t n = (data.length+1) / 2; l += n-1; r += n-1; T res = init;
        while (l < r)
		{
            if ((l & 1) == 0) res = f(res, data[l]);
            if ((r & 1) == 0) res = f(res, data[r-1]);
            l = l/2; r = (r-1)/2;
        }
        return res;
    }
	void update(size_t i, T v)
	{
		i += (data.length+1) / 2 - 1; data[i] = v;
		while (i != 0) { i = (i-1)/2; data[i] = f(data[i*2+1], data[i*2+2]); }
    }
}

void main()
{
	auto N = RD;
	auto K = RD;
	auto A = RDA;
	auto s = RD!string;

	long[long] zip;
	long[] unzip;
	auto len = compress(A, zip, unzip);
	auto b = new long[](N);
	foreach (i; 0..N)
		b[i] = zip[A[i]];

	auto dp = new long[](N);
	dp[] = 1;
	foreach (i; 0..K)
	{
		auto ndp = new long[](N);
		auto data = new long[](N);
		auto st = SegTree!(long)(data, (a, b)=>(a+b)%mod, 0);
		foreach (j; 0..N)
		{
			if (s[i] == '<')
				ndp[j] = st.query(0, b[j]);
			else
				ndp[j] = st.query(b[j]+1, len);
			auto x = st.query(b[j], b[j]+1);
			x.moda(dp[j]);
			st.update(b[j], x);
		}
		dp = ndp;
	}

	long ans;
	foreach (e; dp)
		ans.moda(e);
	writeln(ans);
	stdout.flush;
	debug readln;
}
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