結果
| 問題 |
No.1 道のショートカット
|
| コンテスト | |
| ユーザー |
torus711
|
| 提出日時 | 2015-05-12 16:30:07 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,411 bytes |
| コンパイル時間 | 1,007 ms |
| コンパイル使用メモリ | 114,440 KB |
| 実行使用メモリ | 6,948 KB |
| 最終ジャッジ日時 | 2024-07-08 03:57:40 |
| 合計ジャッジ時間 | 2,379 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 36 WA * 4 |
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 <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 SS = stringstream;
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 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 )( __VA_ARGS__ )
#define FOR( e, c ) for ( auto &e : c )
#define ALL( c ) ( c ).begin(), ( c ).end()
#define AALL( a, t ) ( t* )a, ( t* )a + sizeof( a ) / sizeof( t )
#define DRANGE( c, p ) ( c ).begin(), ( c ).begin() + p, ( c ).end()
#define SZ( v ) ( (int)( v ).size() )
#define PB push_back
#define EM emplace
#define EB emplace_back
#define BI back_inserter
#define EXIST( c, e ) ( ( c ).find( e ) != ( c ).end() )
#define MP make_pair
#define fst first
#define snd second
#define DUMP( x ) cerr << #x << " = " << ( x ) << endl
constexpr int INF = LIM<>::max();
int main()
{
cin.tie( 0 );
ios::sync_with_stdio( false );
int N, C, M;
cin >> N >> C >> M;
VI us( M ), vs( M ), cs( M ), ts( M );
cin >> us >> vs >> cs >> ts;
{
auto f = bind( minus< int >(), _1, 1 );
transform( ALL( us ), us.begin(), f );
transform( ALL( vs ), vs.begin(), f );
}
using Edge = tuple< int, int, int >;
VVT< Edge > G( N );
REP( i, M )
{
G[ us[i] ].EB( vs[i], cs[i], ts[i] );
G[ vs[i] ].EB( us[i], cs[i], ts[i] );
}
VVI distances( N, VI( C + 1, INF ) );
distances[0][0] = 0;
using State = Edge;
priority_queue< State, VT< State >, greater< State > > que;
que.EM( 0, 0, 0 );
while ( !que.empty() )
{
const int dist = get< 0 >( que.top() );
const int u = get< 1 >( que.top() );
const int cost = get< 2 >( que.top() );
que.pop();
if ( distances[ u ][ cost ] < dist )
{
continue;
}
FOR( e, G[u] )
{
const int v = get< 0 >( e );
const int c = get< 1 >( e );
const int d = get< 2 >( e );
if ( cost + c <= C && dist + d < distances[v][ cost + c ] )
{
que.EM( distances[v][ cost + c ] = dist + d, v, cost + c );
}
}
}
const int res = *min_element( ALL( distances.back() ) );
cout << ( res == INF ? -1 : res ) << endl;
return 0;
}
torus711