oj.uz

답안 #543032

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
543032 2022-03-28T22:23:28 Z chonka 별자리 3 (JOI20_constellation3) C++
100 / 100
 451 ms 38280 KB 
#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;

#define MAXN 200007

int n ;
int a[ MAXN ] ;

vector < pair < int , int > > at_row[ MAXN ] ;
vector < int > unblock[ MAXN ] ;

pair < int , int > range[ MAXN ] ;
int prv[ MAXN ] , rnk[ MAXN ] ;
bool emp[ MAXN ] ;
int mx[ MAXN ] ;

class Tree {
public :
    ll tr[ 4 * MAXN ] , lazy[ 4 * MAXN ] ;
    void push_lazy ( int where , int IL , int IR ) {
        tr[ where ] += lazy[ where ] ;
        if ( IL != IR ) {
            lazy[ 2 * where ] += lazy[ where ] ;
            lazy[ 2 * where + 1 ] += lazy[ where ] ;
        }
        lazy[ where ] = 0 ;
    }
    void init ( int where , int IL , int IR ) {
        tr[ where ] = 0 ;
        if ( IL == IR ) { return ; }
        int mid = ( IL + IR ) / 2 ;
        init ( 2 * where , IL , mid ) ;
        init ( 2 * where + 1 , mid + 1 , IR ) ;
    }
    void update ( int where , int IL , int IR , int CURL , int CURR , ll add ) {
        push_lazy ( where , IL , IR ) ;
        if ( IL > IR || CURL > CURR ) { return ; }
        if ( IR < CURL || CURR < IL ) { return ; }
        if ( CURL <= IL && IR <= CURR ) {
            lazy[ where ] += add ;
            push_lazy ( where , IL , IR ) ;
            return ;
        }
        int mid = ( IL + IR ) / 2 ;
        update ( 2 * where , IL , mid , CURL , CURR , add ) ;
        update ( 2 * where + 1 , mid + 1 , IR , CURL , CURR , add ) ;
        tr[ where ] = max ( tr[ 2 * where ] , tr[ 2 * where + 1 ] ) ;
    }
    ll query ( int where , int IL , int IR , int CURL , int CURR ) {
        push_lazy ( where , IL , IR ) ;
        if ( IL > IR || CURL > CURR ) { return 0 ; }
        if ( IR < CURL || CURR < IL ) { return 0 ; }
        if ( CURL <= IL && IR <= CURR ) { return tr[ where ] ; }
        int mid = ( IL + IR ) / 2 ;
        return max ( query ( 2 * where , IL , mid , CURL , CURR ) , query ( 2 * where + 1 , mid + 1 , IR , CURL , CURR ) ) ;
    }
};
Tree w ;
ll ans ;

int get ( int x ) {
    if ( prv[ x ] == -1 ) { return x ; }
    int y = get ( prv[ x ] ) ;
    prv[ x ] = y ;
    return y ;
}

void unite ( int x , int y ) {
    int k1 = get ( x ) ;
    int k2 = get ( y ) ;
    if ( k1 != k2 ) {
        if ( rnk[ k1 ] >= rnk[ k2 ] ) {
            rnk[ k1 ] += ( rnk[ k1 ] == rnk[ k2 ] ) ;
            range[ k1 ].first = min ( range[ k1 ].first , range[ k2 ].first ) ;
            range[ k1 ].second = max ( range[ k1 ].second , range[ k2 ].second ) ;
            prv[ k2 ] = k1 ;
        }
        else {
            range[ k2 ].first = min ( range[ k1 ].first , range[ k2 ].first ) ;
            range[ k2 ].second = max ( range[ k1 ].second , range[ k2 ].second ) ;
            prv[ k1 ] = k2 ;
        }
    }
}

void input ( ) {
    cin >> n ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        cin >> a[ i ] ;
        unblock[ a[ i ] + 1 ].push_back ( i ) ;
    }
    int m ; cin >> m ;
    for ( int i = 1 ; i <= m ; ++ i ) {
        int x , y , val ;
        cin >> x >> y >> val ;
        at_row[ y ].push_back ( { x , val } ) ;
        ans += val ;
    }
    for ( int i = 1 ; i <= n ; ++ i ) {
        range[ i ] = { i , i } ;
        prv[ i ] = -1 , rnk[ i ] = 0 ;
    }
}

void solve ( ) {
    w.init ( 1 , 1 , n ) ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        for ( auto pos : unblock[ i ] ) {
            ll upd_l = 0 , upd_r = 0 ;
            ll sm = 0 ;
            if ( emp[ pos - 1 ] == true ) {
                int root = get ( pos - 1 ) ;
                upd_r = w.query ( 1 , 1 , n , range[ root ].first , range[ root ].second ) ;
                sm += upd_r ;
            }
            if ( emp[ pos + 1 ] == true ) {
                int root = get ( pos + 1 ) ;
                upd_l = w.query ( 1 , 1 , n , range[ root ].first , range[ root ].second ) ;
                sm += upd_l ;
            }
            if ( emp[ pos - 1 ] == true ) {
                int root = get ( pos - 1 ) ;
                w.update ( 1 , 1 , n , range[ root ].first , range[ root ].second , upd_l ) ;
                unite ( pos - 1 , pos ) ;
            }
            if ( emp[ pos + 1 ] == true ) {
                int root = get ( pos + 1 ) ;
                w.update ( 1 , 1 , n , range[ root ].first , range[ root ].second , upd_r ) ;
                unite ( pos , pos + 1 ) ;
            }
            w.update ( 1 , 1 , n , pos , pos , sm ) ;
            emp[ pos ] = true ;
        }
        for ( auto [ x , val ] : at_row[ i ] ) {
            if ( mx[ x ] < val ) {
                w.update ( 1 , 1 , n , x , x , val - mx[ x ] ) ;
                mx[ x ] = val ;
            }
        }
    }
    for ( int i = 1 ; i <= n ; ++ i ) {
        if ( get ( i ) == i && emp[ i ] == true ) {
            ans -= w.query ( 1 , 1 , n , range[ i ].first , range[ i ].second ) ;
        }
    }
    cout << ans << "\n" ;
}

int main ( ) {
    //freopen ( "dictionary.in" , "r" , stdin ) ;
    ios_base :: sync_with_stdio ( false ) ;
    cin.tie ( NULL ) ;
    int t = 1 ;
    // cin >> t ;
    while ( t -- ) {
        input ( ) ;
        solve ( ) ;
    }
    return 0 ;
}

Compilation message

constellation3.cpp: In function 'void solve()':
constellation3.cpp:135:20: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  135 |         for ( auto [ x , val ] : at_row[ i ] ) {
      |                    ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9728 KB Output is correct
5 Correct 5 ms 9768 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 5 ms 9760 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 5 ms 9724 KB Output is correct
13 Correct 5 ms 9812 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9724 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 6 ms 9684 KB Output is correct
18 Correct 6 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9684 KB Output is correct
22 Correct 5 ms 9732 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9728 KB Output is correct
5 Correct 5 ms 9768 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 5 ms 9760 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 5 ms 9724 KB Output is correct
13 Correct 5 ms 9812 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9724 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 6 ms 9684 KB Output is correct
18 Correct 6 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9684 KB Output is correct
22 Correct 5 ms 9732 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9988 KB Output is correct
25 Correct 8 ms 9940 KB Output is correct
26 Correct 8 ms 9940 KB Output is correct
27 Correct 8 ms 9940 KB Output is correct
28 Correct 8 ms 9988 KB Output is correct
29 Correct 8 ms 9940 KB Output is correct
30 Correct 7 ms 9940 KB Output is correct
31 Correct 8 ms 9996 KB Output is correct
32 Correct 10 ms 9960 KB Output is correct
33 Correct 8 ms 9940 KB Output is correct
34 Correct 7 ms 9916 KB Output is correct
35 Correct 7 ms 9940 KB Output is correct
36 Correct 7 ms 9940 KB Output is correct
37 Correct 8 ms 10068 KB Output is correct
38 Correct 7 ms 9940 KB Output is correct
39 Correct 6 ms 9864 KB Output is correct
40 Correct 7 ms 9940 KB Output is correct
41 Correct 8 ms 9864 KB Output is correct
42 Correct 8 ms 9940 KB Output is correct
43 Correct 8 ms 9940 KB Output is correct
44 Correct 8 ms 9940 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 5 ms 9728 KB Output is correct
5 Correct 5 ms 9768 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 5 ms 9760 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 6 ms 9684 KB Output is correct
10 Correct 5 ms 9684 KB Output is correct
11 Correct 5 ms 9684 KB Output is correct
12 Correct 5 ms 9724 KB Output is correct
13 Correct 5 ms 9812 KB Output is correct
14 Correct 5 ms 9684 KB Output is correct
15 Correct 5 ms 9724 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 6 ms 9684 KB Output is correct
18 Correct 6 ms 9684 KB Output is correct
19 Correct 5 ms 9684 KB Output is correct
20 Correct 5 ms 9684 KB Output is correct
21 Correct 5 ms 9684 KB Output is correct
22 Correct 5 ms 9732 KB Output is correct
23 Correct 7 ms 9940 KB Output is correct
24 Correct 7 ms 9988 KB Output is correct
25 Correct 8 ms 9940 KB Output is correct
26 Correct 8 ms 9940 KB Output is correct
27 Correct 8 ms 9940 KB Output is correct
28 Correct 8 ms 9988 KB Output is correct
29 Correct 8 ms 9940 KB Output is correct
30 Correct 7 ms 9940 KB Output is correct
31 Correct 8 ms 9996 KB Output is correct
32 Correct 10 ms 9960 KB Output is correct
33 Correct 8 ms 9940 KB Output is correct
34 Correct 7 ms 9916 KB Output is correct
35 Correct 7 ms 9940 KB Output is correct
36 Correct 7 ms 9940 KB Output is correct
37 Correct 8 ms 10068 KB Output is correct
38 Correct 7 ms 9940 KB Output is correct
39 Correct 6 ms 9864 KB Output is correct
40 Correct 7 ms 9940 KB Output is correct
41 Correct 8 ms 9864 KB Output is correct
42 Correct 8 ms 9940 KB Output is correct
43 Correct 8 ms 9940 KB Output is correct
44 Correct 8 ms 9940 KB Output is correct
45 Correct 451 ms 35972 KB Output is correct
46 Correct 422 ms 35836 KB Output is correct
47 Correct 426 ms 36024 KB Output is correct
48 Correct 448 ms 35836 KB Output is correct
49 Correct 422 ms 35584 KB Output is correct
50 Correct 417 ms 35500 KB Output is correct
51 Correct 413 ms 35600 KB Output is correct
52 Correct 440 ms 36180 KB Output is correct
53 Correct 418 ms 35860 KB Output is correct
54 Correct 358 ms 38280 KB Output is correct
55 Correct 346 ms 38056 KB Output is correct
56 Correct 383 ms 37756 KB Output is correct
57 Correct 338 ms 37836 KB Output is correct
58 Correct 316 ms 32724 KB Output is correct
59 Correct 317 ms 32732 KB Output is correct
60 Correct 253 ms 36444 KB Output is correct
61 Correct 312 ms 31352 KB Output is correct
62 Correct 362 ms 35332 KB Output is correct
63 Correct 307 ms 31008 KB Output is correct
64 Correct 292 ms 30716 KB Output is correct
65 Correct 375 ms 35416 KB Output is correct
66 Correct 306 ms 30728 KB Output is correct