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Submission #574124

# Submission time Handle Problem Language Result Execution time Memory
574124 2022-06-07T23:55:24 Z chonka Copy and Paste 3 (JOI22_copypaste3) C++17
1 / 100
 1190 ms 293084 KB 
#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
const int MAXN = 2507 ;
const int BASE = 27 ;

ll MOD[ 2 ] = { 1000000007 , 998244353 } ;

int n ;
string a ;
ll costA , costB , costC ;

struct hsh {
    int l , r ;
    ll val[ 2 ] ;
    void advance ( int nw ) {
        for ( auto i : { 0 , 1 } ) {
            val[ i ] = ( val[ i ] * BASE + nw ) % MOD[ i ] ;
        }
    }
};

hsh aux[ MAXN ][ MAXN ] ;
vector < hsh > srt ;
int eq_class[ MAXN ][ MAXN ] ;
vector < pair < int , int > > class_list[ MAXN ] ;

pair < int , int > nxt[ MAXN ][ MAXN ] ;
ll dp[ MAXN ][ MAXN ] ;

void input ( ) {
    cin >> n >> a ;
    cin >> costA >> costB >> costC ;
    for ( int i = 1 ; i <= n ; ++ i ) {
        for ( int j = i ; j <= n ; ++ j ) {
            aux[ i ][ j ] = aux[ i ][ j - 1 ] ;
            aux[ i ][ j ].l = i , aux[ i ][ j ].r = j ;
            aux[ i ][ j ].advance ( a[ j - 1 ] - 'a' + 1 ) ;
            srt.push_back ( aux[ i ][ j ] ) ;
        }
    }
    auto cmp = [ & ] ( hsh p1 , hsh p2 ) {
        for ( auto i : { 0 , 1 } ) {
            if ( p1.val[ i ] != p2.val[ i ] ) {
                return ( p1.val[ i ] < p2.val[ i ] ) ;
            }
        }
        return false ;
    };
    sort ( srt.begin ( ) , srt.end ( ) , cmp ) ;
    int sz = srt.size ( ) ;
    eq_class[ srt[ 0 ].l ][ srt[ 0 ].r ] = 1 ;
    int tp = 1 ;
    for ( int i = 1 ; i < sz ; ++ i ) {
        if ( srt[ i ].val[ 0 ] == srt[ i - 1 ].val[ 0 ] && srt[ i ].val[ 1 ] == srt[ i - 1 ].val[ 1 ] ) {
            eq_class[ srt[ i ].l ][ srt[ i ].r ] = tp ;
        }
        else {
            eq_class[ srt[ i ].l ][ srt[ i ].r ] = ++ tp ;
        }
    }
    for ( int i = 1 ; i <= n ; ++ i ) {
        for ( int j = i ; j <= n ; ++ j ) {
            class_list[ eq_class[ i ][ j ] ].push_back ( { i , j } ) ;
            dp[ i ][ j ] = 1e15 ;
        }
    }
    for ( int i = 1 ; i <= n ; ++ i ) {
        for ( int j = 0 ; j < i ; ++ j ) {
            dp[ i ][ j ] = costB ;
        }
    }
    for ( int wh = 1 ; wh <= tp ; ++ wh ) {
        int sz = class_list[ wh ].size ( ) ;
        int pos = 0 ;
        for ( int i = 0 ; i < sz ; ++ i ) {
            while ( pos < sz && class_list[ wh ][ i ].second >= class_list[ wh ][ pos ].first ) {
                ++ pos ;
            }
            if ( pos < sz ) {
                nxt[ class_list[ wh ][ i ].first ][ class_list[ wh ][ i ].second ] = class_list[ wh ][ pos ] ;
            }
            else {
                nxt[ class_list[ wh ][ i ].first ][ class_list[ wh ][ i ].second ] = { -1 , -1 } ;
            }
        }
    }
}

void solve ( ) {
    for ( int len = 0 ; len < n ; ++ len ) {
        for ( int i = 1 ; i + len <= n ; ++ i ) {
            int j = i + len ;
            if ( i + 1 <= n ) {
                dp[ i ][ j ] = min ( dp[ i ][ j ] , dp[ i + 1 ][ j ] + costA ) ;
            }
            if ( j - 1 >= 1 ) {
                dp[ i ][ j ] = min ( dp[ i ][ j ] , dp[ i ][ j - 1 ] + costA ) ;
            }
            pair < int , int > act ;
            act = { i , j } ;
            int coef = 1 ;
            while ( 1 ) {
                act = nxt[ act.first ][ act.second ] ;
                if ( act.first < 0 ) { break ; }
                ++ coef ;
                int lft = ( act.second - i + 1 ) - coef * ( j - i + 1 ) ;
                dp[ i ][ act.second ] = min ( dp[ i ][ act.second ] , dp[ i ][ j ] + coef * costC + lft * costA + costB ) ;
            }
        }
    }
    cout << dp[ 1 ][ n ] - costB << "\n" ;
}


int main ( ) {
    ios_base :: sync_with_stdio ( false ) ;
    cin.tie ( NULL ) ;
    int t ;
    /// cin >> t ;
    t = 1 ;
    while ( t -- ) {
        input ( ) ;
        solve ( ) ;
    }
    return 0 ;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 404 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 559 ms 171796 KB Output is correct
4 Correct 656 ms 197332 KB Output is correct
5 Correct 806 ms 225000 KB Output is correct
6 Correct 970 ms 257396 KB Output is correct
7 Correct 1190 ms 293080 KB Output is correct
8 Correct 1142 ms 293084 KB Output is correct
9 Correct 1132 ms 292948 KB Output is correct
10 Incorrect 1 ms 340 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 404 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 528 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Incorrect 1 ms 340 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 404 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 528 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Incorrect 1 ms 340 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #5
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 404 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 528 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 724 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Incorrect 1 ms 340 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #6
0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 404 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 559 ms 171796 KB Output is correct
14 Correct 656 ms 197332 KB Output is correct
15 Correct 806 ms 225000 KB Output is correct
16 Correct 970 ms 257396 KB Output is correct
17 Correct 1190 ms 293080 KB Output is correct
18 Correct 1142 ms 293084 KB Output is correct
19 Correct 1132 ms 292948 KB Output is correct
20 Incorrect 1 ms 340 KB Output isn't correct
21 Halted 0 ms 0 KB -