Submission #294818

#	Time	Username	Problem	Language	Result	Execution time	Memory
294818		infinite_iq	Pinball (JOI14_pinball)	C++14	100 / 100	961 ms	53004 KiB

pinball

#define fast ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#include <bits/stdc++.h>
using namespace std;
#define sqr 100
#define mp make_pair
#define mid (l+r)/2
#define le node * 2 
#define ri node * 2 + 1 
#define pb push_back
#define ppb pop_back
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
#define ins insert
#define era erase
//#define C continue
#define mem(dp,i) memset(dp,i,sizeof(dp))
#define mset multiset
#define all(x) x.begin(), x.end()
#define gc getchar_unlocked
typedef long long ll;
typedef short int si;
typedef double ld;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;
typedef pair<double,ll>pdi;
const ll inf=2e18;
const ll mod=1e9+7;
const ld Pi=acos(-1) ;
ll n , m , M ;
set < ll > s ;
unordered_map < ll , ll > id ;
ll A [100009] , B [100009] , C [100009] , D [100009] , Dp [100009][2] ;
void Compress () {
        for ( int i = 0 ; i < n ; i ++ ) {
                s .ins ( A [i] ) ;
                s .ins ( B [i] ) ;
                s .ins ( C [i] ) ;
        }
  		s .ins (1) ;
  		s .ins (M) ;
        for ( auto u : s ) {
                id [u] = ++ m ;
        }
        for ( int i = 0 ; i < n ; i ++ ) {
                A [i] = id [ A [i] ] ;
                B [i] = id [ B [i] ] ;
                C [i] = id [ C [i] ] ;
        }
}
ll tree [4000009][2] ;
void build ( int node , int l , int r ) {
        tree [node][0] = tree [node][1] = inf ;
        if ( l == r ) return ;
        build ( le , l , mid ) ;
        build ( ri , mid + 1 , r ) ;
}
void upd ( int node , int l , int r , int id , ll val , int x ) {
        if ( l == r ) {
                tree [node][x] = min ( tree [node][x] , val ) ;
                return ;
        }
        if ( id <= mid ) upd ( le , l , mid , id , val , x ) ;
        else upd ( ri , mid + 1 , r , id , val , x ) ;
        for ( int i = 0 ; i < 2 ; i ++ ) {
                tree [node][i] = min ( tree [le][i] , tree [ri][i] ) ;
        }
}
ll query ( int node , int l , int r , int s , int e , int x ) {
        if ( s > r || e < l ) return inf ;
        if ( s <= l && e >= r ) return tree [node][x] ;
        return min ( query ( le , l , mid , s , e , x ) , query ( ri , mid + 1 , r , s , e , x ) ) ;
}
int main () {
        cin >> n >> M ;
        for ( int i = 0 ; i < n ; i ++ ) {
                cin >> A [i] >> B [i] >> C [i] >> D [i] ;
        }
        Compress () ;
        build ( 1 , 0 , m ) ;
        for ( int i = 0 ; i < n ; i ++ ) {
                Dp [i][0] = ( A [i] == 1 ? D [i] : inf ) ;
                Dp [i][1] = ( B [i] == m ? D [i] : inf ) ;
                for ( int j = 0 ; j < 2 ; j ++ ) {
                        Dp [i][j] = min ( Dp [i][j] , query ( 1 , 0 , m , A [i] , B [i] , j ) + D [i] ) ;
                }
                for ( int j = 0 ; j < 2 ; j ++ ) {
                        upd ( 1 , 0 , m , C [i] , Dp [i][j] , j ) ;
                }
        }
        ll ans = inf ;
        for ( int i = 0 ; i < n ; i ++ ) {
                ans = min ( ans , Dp [i][0] + Dp [i][1] - D [i] ) ;
        }
        cout << ( ans >= inf ? -1 : ans ) << endl ;
}

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 49 / 49