#88960 (C++14) No.367 ナイトの転身

提出ソース

結果

問題	No.367 ナイトの転身
ユーザー	anta
提出日時	2016-04-29 22:50:36
言語	C++14 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	27 ms / 2,000 ms
コード長	8,101 bytes
コンパイル時間	1,023 ms
コンパイル使用メモリ	103,828 KB
実行使用メモリ	5,908 KB
最終ジャッジ日時	2024-04-19 07:37:58
合計ジャッジ時間	1,818 ms
ジャッジサーバーID （参考情報）	judge5 / judge4

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	2 ms 5,248 KB
testcase_01	AC	1 ms 5,376 KB
testcase_02	AC	2 ms 5,376 KB
testcase_03	AC	2 ms 5,376 KB
testcase_04	AC	2 ms 5,376 KB
testcase_05	AC	2 ms 5,376 KB
testcase_06	AC	1 ms 5,376 KB
testcase_07	AC	2 ms 5,376 KB
testcase_08	AC	1 ms 5,376 KB
testcase_09	AC	1 ms 5,376 KB
testcase_10	AC	18 ms 5,376 KB
testcase_11	AC	27 ms 5,908 KB
testcase_12	AC	4 ms 5,376 KB
testcase_13	AC	5 ms 5,376 KB
testcase_14	AC	11 ms 5,376 KB
testcase_15	AC	2 ms 5,376 KB
testcase_16	AC	10 ms 5,376 KB
testcase_17	AC	3 ms 5,376 KB
testcase_18	AC	3 ms 5,376 KB
testcase_19	AC	3 ms 5,376 KB
testcase_20	AC	2 ms 5,376 KB
testcase_21	AC	3 ms 5,376 KB
testcase_22	AC	2 ms 5,376 KB
testcase_23	AC	2 ms 5,376 KB
testcase_24	AC	2 ms 5,376 KB
testcase_25	AC	2 ms 5,376 KB
testcase_26	AC	2 ms 5,376 KB

権限があれば一括ダウンロードができます

ソースコード

raw source code

#include <string>
#include <vector>
#include <algorithm>
#include <numeric>
#include <set>
#include <map>
#include <queue>
#include <iostream>
#include <sstream>
#include <cstdio>
#include <cmath>
#include <ctime>
#include <cstring>
#include <cctype>
#include <cassert>
#include <limits>
#include <functional>
#define rep(i,n) for(int (i)=0;(i)<(int)(n);++(i))
#define rer(i,l,u) for(int (i)=(int)(l);(i)<=(int)(u);++(i))
#define reu(i,l,u) for(int (i)=(int)(l);(i)<(int)(u);++(i))
#if defined(_MSC_VER) || __cplusplus > 199711L
#define aut(r,v) auto r = (v)
#else
#define aut(r,v) __typeof(v) r = (v)
#endif
#define each(it,o) for(aut(it, (o).begin()); it != (o).end(); ++ it)
#define all(o) (o).begin(), (o).end()
#define pb(x) push_back(x)
#define mp(x,y) make_pair((x),(y))
#define mset(m,v) memset(m,v,sizeof(m))
#define INF 0x3f3f3f3f
#define INFL 0x3f3f3f3f3f3f3f3fLL
using namespace std;
typedef vector<int> vi; typedef pair<int, int> pii; typedef vector<pair<int, int> > vpii; typedef long long ll;
template<typename T, typename U> inline void amin(T &x, U y) { if(y < x) x = y; }
template<typename T, typename U> inline void amax(T &x, U y) { if(x < y) x = y; }


class FastInput {
	bool _end;
public:
	FastInput() : _end(false) {}

	operator void*() { return _end ? 0 : (void*)this; }

	template<typename T>
	void read_unsigned(T *res) {
		T x = 0;
		for(char c = skip(); '0' <= c && c <= '9'; c = gc())
			x = x * 10 + (c - '0');
		*res = x;
	}

	template<typename T>
	void read_signed(T *res) {
		char c = skip();
		bool sign = false;
		if(c == '-') sign = true, c = gc();
		T x = 0;
		for(; '0' <= c && c <= '9'; c = gc())
			x = x * 10 + (c - '0');
		*res = !sign ? x : -x;
	}

	void read_c_string(char *str, int *len) {
		int n = 0;
		for(char c = skip(); !is_delim(c); c = gc())
			str[n ++] = c;
		str[n] = 0;
		*len = n;
	}

	void read_string(std::string *str) {
		str->clear();
		for(char c = skip(); !is_delim(c); c = gc())
			*str += c;
	}

	void read_line(std::string *str) {
		str->clear();
		for(char c = gc(); c != '\n'; c = gc())
			*str += c;
		if(!str->empty() && (*str)[str->size() - 1] == '\r') str->resize(str->size() - 1);
	}

	void read_double(double *res) {
		std::string buf;
		read_string(&buf);
		sscanf(buf.c_str(), "%lf", res);
	}

	void read_char(char *res) {
		*res = skip();
	}

	void read_string_buf(char *res, int n) {
		*res = skip();
	}

	FastInput &operator()(char &res) { read_char(&res); return *this; }
	FastInput &operator()(int &res) { read_signed(&res); return *this; }
	FastInput &operator()(unsigned &res) { read_unsigned(&res); return *this; }
	FastInput &operator()(long long &res) { read_signed(&res); return *this; }
	FastInput &operator()(unsigned long long &res) { read_unsigned(&res); return *this; }
	FastInput &operator()(char *res) { int len; read_c_string(res, &len); return *this; }
	FastInput &operator()(std::string &res) { read_string(&res); return *this; }
	FastInput &operator()(double &res) { read_double(&res); return *this; }

	template<typename T1, typename T2>
	FastInput &operator()(T1 &res1, T2 &res2) {
		return operator()(res1)(res2);
	}
	template<typename T1, typename T2, typename T3>
	FastInput &operator()(T1 &res1, T2 &res2, T3 &res3) {
		return operator()(res1)(res2)(res3);
	}

	template<typename T>
	FastInput &a(T *a, int n) {
		for(int i = 0; i < n; ++ i)
			operator()(a[i]);
		return *this;
	}

	template<typename T>
	FastInput &operator()(vector<T> &v) {
		for(size_t i = 0; i < v.size(); ++ i)
			operator()(v[i]);
		return *this;
	}

private:
	static char gc() {
#if defined(__GNUC__) && !defined(__MINGW32__)
		return (char)getchar_unlocked();
#elif defined(_MSC_VER)
		return (char)_getchar_nolock();
#else
		return (char)getchar();
#endif
	}

	static bool is_delim(char c) {
		return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == EOF;
	}

	char skip() {
		if(_end) return EOF;
		char c;
		for(c = gc(); c != -1 && is_delim(c); c = gc());
		if(c == EOF) _end = true;
		return c;
	}
} in;

class FastOutput {
public:

	template<typename T>
	void print_unsigned(T x) {
		char buf[24]; int n = 0;
		do buf[n ++] = x % 10, x /= 10; while(x != 0);
		while(n > 0) pc('0' + buf[-- n]);
	}

	template<typename T>
	void print_signed(T x) {
		char buf[24]; int n = 0; bool sign = false;
		if(x < 0) sign = true;
		//depends on the -x % y behaviour
		do buf[n ++] = x % 10, x /= 10; while(x != 0);
		if(!sign) {
			while(n > 0) pc('0' + buf[-- n]);
		} else {
			pc('-');
			while(n > 0) pc('0' - buf[-- n]);
		}
	}

	void print_c_string(const char *str) {
		for(const char *p = str; *p; ++ p)
			pc(*p);
	}

	void print_string(const std::string &str) {
		print_c_string(str.c_str());
	}

	void print_double(double x, int digits) {
		//|res| < 2^1024 ~ 10^308
		char buf[512];
#ifdef _MSC_VER
		sprintf_s(buf, "%.*f", digits, x);
#else
		sprintf(buf, "%.*f", digits, x);
#endif
		print_c_string(buf);
	}

	void print_char(char x) {
		pc(x);
	}

	FastOutput &operator()(char x) { print_char(x); return *this; }
	FastOutput &operator()(int x) { print_signed(x); return *this; }
	FastOutput &operator()(unsigned x) { print_unsigned(x); return *this; }
	FastOutput &operator()(long long x) { print_signed(x); return *this; }
	FastOutput &operator()(unsigned long long x) { print_unsigned(x); return *this; }
	FastOutput &operator()(const char *str) { print_c_string(str); return *this; }
	FastOutput &operator()(const std::string &str) { print_string(str); return *this; }
	FastOutput &operator()(double x) { print_double(x, 10); return *this; }

	template<typename T1, typename T2>
	FastOutput &operator()(T1 x1, T2 x2) { return operator()(x1)(x2); }
	template<typename T1, typename T2, typename T3>
	FastOutput &operator()(T1 x1, T2 x2, T3 x3) { return operator()(x1)(x2)(x3); }
	template<typename T1, typename T2, typename T3, typename T4>
	FastOutput &operator()(T1 x1, T2 x2, T3 x3, T4 x4) { return operator()(x1)(x2)(x3)(x4); }

private:
	static void pc(char c) {
#if defined(__GNUC__) && !defined(__MINGW32__)
		putchar_unlocked(c);
#elif defined(_MSC_VER)
		_putchar_nolock(c);
#else
		putchar(c);
#endif
	}
} out;

class FastOutputN {
public:
	template<typename T1>
	FastOutputN &operator()(T1 x1) { out(x1)('\n'); return *this; }
	template<typename T1, typename T2>
	FastOutputN &operator()(T1 x1, T2 x2) { out(x1, x2)('\n'); return *this; }
	template<typename T1, typename T2, typename T3>
	FastOutputN &operator()(T1 x1, T2 x2, T3 x3) { out(x1, x2, x3)('\n'); return *this; }
	template<typename T1, typename T2, typename T3, typename T4>
	FastOutputN &operator()(T1 x1, T2 x2, T3 x3, T4 x4) { out(x1, x2, x3, x4)('\n'); return *this; }

	template<typename T>
	FastOutputN &a(const T *a, int n) {
		for(int i = 0; i < n; ++ i) {
			if(i != 0) out(' ');
			out(a[i]);
		}
		out('\n');
		return *this;
	}

	template<typename T>
	FastOutputN &operator()(const vector<T> &v) {
		for(size_t i = 0; i < v.size(); ++ i) {
			if(i != 0) out(' ');
			out(v[i]);
		}
		out('\n');
		return *this;
	}
} outn;

int g_W;
int geth(int i, int j, int k) {
	return (i * g_W + j) * 2 + k;
}

int main() {
	const int dy[2][8] = {
		{ 2,2,1,1,-1,-1,-2,-2 },
		{ 1,1,-1,-1 }
	};
	const int dx[2][8] = {
		{ 1,-1,2,-2,2,-2,1,-1 },
		{ 1,-1,1,-1 }
	};
	int H; int W;
	while(in(H, W)) {
		g_W = W;
		vector<string> s(H);
		rep(i, H) in(s[i]);
		pii spos;
		rep(i, H) rep(j, W) if(s[i][j] == 'S')
			spos = mp(i, j);
		vector<bool> vis(H * W * 2);
		vi q;
		q.push_back(geth(spos.first, spos.second, 0));
		vis[geth(spos.first, spos.second, 0)] = true;
		int ans = -1, curd = 0;
		for(int h = 0, td = q.size(); h != q.size(); ++ h) {
			if(h == td) {
				++ curd;
				td = q.size();
			}
			int t = q[h];
			int i = t / 2 / W, j = t / 2 % W, k = t % 2;
			if(s[i][j] == 'G') {
				ans = curd;
				break;
			}
			rep(d, k == 0 ? 8 : 4) {
				int yy = i + dy[k][d], xx = j + dx[k][d];
				if(yy < 0 || yy >= H || xx < 0 || xx >= W) continue;
				int nk = k ^ (s[yy][xx] == 'R' ? 1 : 0);
				int nh = geth(yy, xx, nk);
				if(!vis[nh]) {
					vis[nh] = true;
					q.push_back(nh);
				}
			}
		}
		outn(ans);
	}
	return 0;
}

yukicoder

結果

テストケース

ソースコード