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QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #425551 | #8742. 黑白 | cmk666 | WA | 12ms | 10464kb | C++23 | 7.2kb | 2024-05-30 13:32:28 | 2024-05-30 13:32:29 |
Judging History
answer
/* _ _ _ _ __ __ __
/ \ _ _ | |_ | |__ ___ _ __ _ ___ _ __ ___ | | __ / /_ / /_ / /_
/ _ \ | | | | | __| | '_ \ / _ \ | '__| (_) / __| | '_ ` _ \ | |/ / | '_ \ | '_ \ | '_ \
/ ___ \ | |_| | | |_ | | | | | (_) | | | _ | (__ | | | | | | | < | (_) | | (_) | | (_) |
/_/ \_\ \__,_| \__| |_| |_| \___/ |_| (_) \___| |_| |_| |_| |_|\_\ \___/ \___/ \___/
[Created Time: 2024-05-30 13:27:50]
[Last Modified Time: 2024-05-30 13:32:15] */
#pragma GCC optimize("Ofast", "unroll-loops")
#include<bits/stdc++.h>
#ifdef LOCAL
#include"debug.h"
#else
#define D(...) ((void)0)
#endif
using namespace std; using ll = long long;
#define For(i, j, k) for ( int i = (j) ; i <= (k) ; i++ )
#define Fol(i, j, k) for ( int i = (j) ; i >= (k) ; i-- )
namespace FastIO
{
// ------------------------------
// #define DISABLE_MMAP
// ------------------------------
#if ( defined(LOCAL) || defined(_WIN32) ) && !defined(DISABLE_MMAP)
#define DISABLE_MMAP
#endif
#ifdef LOCAL
inline char gc() { return getchar(); }
inline void pc(char c) { putchar(c); }
#else
#ifdef DISABLE_MMAP
inline constexpr int _READ_SIZE = 1 << 18;
inline static char _read_buffer[_READ_SIZE], *_read_ptr = nullptr, *_read_ptr_end = nullptr;
inline char gc()
{
if ( __builtin_expect(_read_ptr == _read_ptr_end, false) )
{
_read_ptr = _read_buffer, _read_ptr_end = _read_buffer + fread(_read_buffer, 1, _READ_SIZE, stdin);
if ( __builtin_expect(_read_ptr == _read_ptr_end, false) ) return EOF;
}
return *_read_ptr++;
}
#else
#include<sys/mman.h>
inline static const char *_read_ptr = (const char *)mmap(nullptr, 0x7fffffff, 1, 2, 0, 0);
inline char gc() { return *_read_ptr++; }
#endif
inline constexpr int _WRITE_SIZE = 1 << 18;
inline static char _write_buffer[_WRITE_SIZE], *_write_ptr = _write_buffer;
inline void pc(char c)
{
*_write_ptr++ = c;
if ( __builtin_expect(_write_buffer + _WRITE_SIZE == _write_ptr, false) )
fwrite(_write_buffer, 1, _write_ptr - _write_buffer, stdout), _write_ptr = _write_buffer;
}
inline struct _auto_flush
{
inline ~_auto_flush() { fwrite(_write_buffer, 1, _write_ptr - _write_buffer, stdout); }
} _auto_flush;
#endif
template < class T > inline constexpr bool _is_signed = numeric_limits < T >::is_signed;
template < class T > inline constexpr bool _is_unsigned = numeric_limits < T >::is_integer && !_is_signed < T >;
#if __SIZEOF_LONG__ == 64
template <> inline constexpr bool _is_signed < __int128 > = true;
template <> inline constexpr bool _is_unsigned < __uint128_t > = true;
#endif
inline void read(char &c) { do c = gc(); while ( !isgraph(c) ); }
inline void read_cstr(char *s)
{
char c = gc(); while ( !isgraph(c) ) c = gc();
while ( isgraph(c) ) *s++ = c, c = gc(); *s = 0;
}
inline void read(string &s)
{
char c = gc(); s.clear(); while ( !isgraph(c) ) c = gc();
while ( isgraph(c) ) s.push_back(c), c = gc();
}
template < class T, enable_if_t < _is_signed < T >, int > = 0 >
inline void read(T &x)
{
char c = gc(); bool f = true; x = 0;
while ( !isdigit(c) ) { if ( c == 45 ) f = false; c = gc(); }
if ( f ) while ( isdigit(c) ) x = x * 10 + ( c & 15 ), c = gc();
else while ( isdigit(c) ) x = x * 10 - ( c & 15 ), c = gc();
}
template < class T, enable_if_t < _is_unsigned < T >, int > = 0 >
inline void read(T &x)
{
char c = gc(); while ( !isdigit(c) ) c = gc();
x = 0; while ( isdigit(c) ) x = x * 10 + ( c & 15 ), c = gc();
}
inline void write(char c) { pc(c); }
inline void write_cstr(const char *s) { while ( *s ) pc(*s++); }
inline void write(const string &s) { for ( char c : s ) pc(c); }
template < class T, enable_if_t < _is_signed < T >, int > = 0 >
inline void write(T x)
{
char buffer[numeric_limits < T >::digits10 + 1]; int digits = 0;
if ( x >= 0 ) do buffer[digits++] = ( x % 10 ) | 48, x /= 10; while ( x );
else { pc(45); do buffer[digits++] = -( x % 10 ) | 48, x /= 10; while ( x ); }
while ( digits ) pc(buffer[--digits]);
}
template < class T, enable_if_t < _is_unsigned < T >, int > = 0 >
inline void write(T x)
{
char buffer[numeric_limits < T >::digits10]; int digits = 0;
do buffer[digits++] = ( x % 10 ) | 48, x /= 10; while ( x );
while ( digits ) pc(buffer[--digits]);
}
template < int N > struct _tuple_io_helper
{
template < class ...T > static inline void _read(tuple < T... > &x) { _tuple_io_helper < N - 1 >::_read(x), read(get<N - 1>(x)); }
template < class ...T > static inline void _write(const tuple < T... > &x) { _tuple_io_helper < N - 1 >::_write(x), pc(32), write(get<N - 1>(x)); }
};
template <> struct _tuple_io_helper < 1 >
{
template < class ...T > static inline void _read(tuple < T... > &x) { read(get<0>(x)); }
template < class ...T > static inline void _write(const tuple < T... > &x) { write(get<0>(x)); }
};
template < class ...T > inline void read(tuple < T... > &x) { _tuple_io_helper < sizeof...(T) >::_read(x); }
template < class ...T > inline void write(const tuple < T... > &x) { _tuple_io_helper < sizeof...(T) >::_write(x); }
template < class T1, class T2 > inline void read(pair < T1, T2 > &x) { read(x.first), read(x.second); }
template < class T1, class T2 > inline void write(const pair < T1, T2 > &x) { write(x.first), pc(32), write(x.second); }
template < class T1, class ...T2 > inline void read(T1 &x, T2 &...y) { read(x), read(y...); }
template < class ...T > inline void read_cstr(char *x, T *...y) { read_cstr(x), read_cstr(y...); }
template < class T1, class ...T2 > inline void write(const T1 &x, const T2 &...y) { write(x), write(y...); }
template < class ...T > inline void write_cstr(const char *x, const T *...y) { write_cstr(x), write_cstr(y...); }
template < class T > inline void print(const T &x) { write(x); }
inline void print_cstr(const char *x) { write_cstr(x); }
template < class T1, class ...T2 > inline void print(const T1 &x, const T2 &...y) { write(x), pc(32), print(y...); }
template < class ...T > inline void print_cstr(const char *x, const T *...y) { write_cstr(x), pc(32), print_cstr(y...); }
inline void println() { pc(10); } inline void println_cstr() { pc(10); }
template < class ...T > inline void println(const T &...x) { print(x...), pc(10); }
template < class ...T > inline void println_cstr(const T *...x) { print_cstr(x...), pc(10); }
} using FastIO::read, FastIO::read_cstr, FastIO::write, FastIO::write_cstr, FastIO::println, FastIO::println_cstr;
int n, m, o; char s[1009][1009]; bool used[1009][1009];
inline bool dfs(int x, int y)
{
if ( s[x][y] == 'B' ) return false;
if ( x == n && y == m ) return true;
if ( used[x][y] ) return false; used[x][y] = true;
return ( x != n && dfs(x + 1, y) ) || ( y != m && dfs(x, y + 1) );
}
inline void work()
{
read(n, m), o = ( n - 1 ) * ( m - 1 );
For(i, 1, n) read_cstr(s[i] + 1), fill(used[i] + 1, used[i] + m + 1, false);
For(i, 1, n) o -= count(s[i] + 1, s[i] + m + 1, 'B');
println("JI"[dfs(1, 1) && o & 1]);
}
int main() { int t; read(t); For(tt, 1, t) work(); return 0; }
// 想上GM捏 想上GM捏 想上GM捏 想上GM捏 想上GM捏
// 伊娜可爱捏 伊娜贴贴捏
详细
Test #1:
score: 0
Wrong Answer
time: 12ms
memory: 10464kb
input:
100 2 6 WWBBWW WWWWWB 3 8 WWWBBBBB WWWBWWWB BBWWWBWW 5 2 WB BB BB BW BB 6 4 WWBW WBWB WWWW WWWB BBWW BWBW 2 3 WWW WBW 124 125 BWWWWWWWWWWWWWWWWWWWWWWWWWWBWWWWBWWWWWWWWBWWWWWWWWWWWBBBBWWWWWWWWWWWWWWWWWBWWWWWWWWWBWWWWWWWWWWBWWWWWWWWBBWWWWWWWWWWWWWWWWWWB WWWWWWWBWWBWWWWWWWWWWWBWWBWWBWWWWBWWWWWWWWWBWBWB...
output:
J J J I I J I J J J J J J J J J J J I J J J I I I J J I J J J J I J J J J J J I J J I I J J J I J J J I J I J J J J J J J J J I J J I J I J J J J I J J J J J J J J J J J I J J J I I J J J J J J J J J
result:
wrong answer 8th lines differ - expected: 'I', found: 'J'