結果
問題 | No.439 チワワのなる木 |
ユーザー |
![]() |
提出日時 | 2016-10-28 23:56:15 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
CE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 4,016 bytes |
コンパイル時間 | 888 ms |
コンパイル使用メモリ | 97,204 KB |
最終ジャッジ日時 | 2024-11-14 19:53:13 |
合計ジャッジ時間 | 2,062 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
(要ログイン)
コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。(リジャッジ後のコンパイルエラーは公開されます)
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
ただし、clay言語の場合は開発者のデバッグのため、公開されます。
コンパイルメッセージ
main.cpp: In function 'std::string get_str()': main.cpp:77:9: error: 'gets' was not declared in this scope; did you mean 'getw'? 77 | gets( buffer ); | ^~~~ | getw
ソースコード
#include <iostream>#include <iomanip>#include <sstream>#include <vector>#include <string>#include <set>#include <unordered_set>#include <map>#include <unordered_map>#include <stack>#include <queue>#include <deque>#include <algorithm>#include <functional>#include <iterator>#include <limits>#include <numeric>#include <utility>#include <type_traits>#include <cmath>#include <cassert>#include <cstdio>using namespace std;using namespace placeholders;using LL = long long;using ULL = unsigned long long;using VI = vector< int >;using VVI = vector< vector< int > >;using VS = vector< string >;using ISS = istringstream;using OSS = ostringstream;using PII = pair< int, int >;using VPII = vector< pair< int, int > >;template < typename T = int > using VT = vector< T >;template < typename T = int > using VVT = vector< vector< T > >;template < typename T = int > using LIM = numeric_limits< T >;template < typename T > inline istream& operator>>( istream &s, vector< T > &v ){ for ( T &t : v ) { s >> t; } return s; }template < typename T > inline ostream& operator<<( ostream &s, const vector< T > &v ){ for ( int i = 0; i < int( v.size() ); ++i ){ s << ( " " + !i) << v[i]; } return s; }template < typename T > inline T fromString( const string &s ) { T res; istringstream iss( s ); iss >> res; return res; }template < typename T > inline string toString( const T &a ) { ostringstream oss; oss << a; return oss.str(); }#define NUMBERED( name, number ) NUMBERED2( name, number )#define NUMBERED2( name, number ) name ## _ ## number#define REP1( n ) REP2( NUMBERED( REP_COUNTER, __LINE__ ), n )#define REP2( i, n ) REP3( i, 0, n )#define REP3( i, m, n ) for ( int i = ( int )( m ); i < ( int )( n ); ++i )#define GET_REP( a, b, c, F, ... ) F#define REP( ... ) GET_REP( __VA_ARGS__, REP3, REP2, REP1 )( __VA_ARGS__ )#define FOR( e, c ) for ( auto &&e : c )#define ALL( c ) begin( c ), end( c )#define AALL( a ) ( remove_all_extents< decltype( a ) >::type * )a, ( remove_all_extents< decltype( a ) >::type * )a + sizeof( a ) / sizeof(remove_all_extents< decltype( a ) >::type )#define DRANGE( c, p ) begin( c ), begin( c ) + ( p ), end( c )#define SZ( v ) ( (int)( v ).size() )#define EXIST( c, e ) ( ( c ).find( e ) != ( c ).end() )template < typename T > inline bool chmin( T &a, const T &b ){ if ( b < a ) { a = b; return true; } return false; }template < typename T > inline bool chmax( T &a, const T &b ){ if ( a < b ) { a = b; return true; } return false; }#define PB push_back#define EM emplace#define EB emplace_back#define BI back_inserter#define MP make_pair#define fst first#define snd second#define DUMP( x ) cerr << #x << " = " << ( x ) << endlstring get_str(){char buffer[ 1 << 17 ];gets( buffer );return move( string( buffer ) );}int N;string S;VVI G;int dp[ 1 << 17 ][2];void dfs1( const int u = 0, const int p = -1 ){++dp[u][ S[u] == 'w' ];FOR( v, G[u] ){if ( v == p ){continue;}dfs1( v, u );dp[u][0] += dp[v][0];dp[u][1] += dp[v][1];}return;}LL dfs2( const int u = 0, const int p = -1, const int pc = 0, const int pw = 0 ){VI cs, ws;FOR( v, G[u] ){if ( v == p ){continue;}cs.PB( dp[v][0] );ws.PB( dp[v][1] );}cs.PB( pc );ws.PB( pw );const int tc = accumulate( ALL( cs ), 0 );const int tw = accumulate( ALL( ws ), 0 );LL res = 0;if ( S[u] == 'w' ){res += LL( tc ) * tw;REP( i, SZ( cs ) ){res -= LL( cs[i] ) * ws[i];}}FOR( v, G[u] ){if ( v == p ){continue;}res += dfs2( v, u, tc - dp[v][0] + ( S[u] == 'c' ) , tw - dp[v][1] + ( S[u] == 'w' ) );}return res;}int main(){cin.tie( 0 );ios::sync_with_stdio( false );cout << setprecision( 12 ) << fixed;scanf( "%d ", &N );S = get_str();G.resize( N );REP( N - 1 ){int a, b;scanf( " %d%d", &a, &b );--a, --b;G[a].PB( b );G[b].PB( a );}dfs1();printf( "%lld\n", dfs2() );fflush( stdout );return 0;}