"use strict";

const scanf = require( 'scanf' );

class CombinationList {

    constructor( values ) {
        this._values       = values;
        this._combinations = [];
    }

    addCombination( bonus, comb ) {
        let self = this;

        let combination = [];
        let total = bonus;
        comb.forEach(function( c ) {
            total -= self._values[ c ];
            combination[c] = true;
        });
        this._combinations.push({
            c: combination,
            total: total
        });
    }

    join( i1, i2 ) {
        const cout = {
            c: [],
            total: 0
        };
        const c1 = this._combinations[ i1 ];
        const c2 = this._combinations[ i2 ];

        let total = c1.total + c2.total;
        for ( let i = 0; i < this._values.length; ++i ) {
            if ( c1.c[i] && c2.c[i] ) {
                total += this._values[i];
            }
            cout.c[i] = c1.c[i] || c2.c[i];
        }
        cout.total = total;
        return cout;
    }

    optimize() {
        const max = this._combinations.length;
        let skiped = [];
        let running = true;
        while ( running ) {
            running = false;
            for ( let i = 0; i < max; ++i ) {
                const c = this._combinations[ i ];
                for ( let j = i+1; j<max; ++j ) {
                    if ( skiped[j] === true )
                        continue;

                    const joined = this.join( i, j );
                    if ( joined.total > c.total ) {
                        c.c     = joined.c;
                        c.total = joined.total;
                        running = true;
                        skiped[j] = true;
                    }
                }
            }
        }

        const compacted = [];
        for ( let i = 0; i < max; ++i ) {
            if ( ( skiped[i] === true ) || ( this._combinations[i].total < 0 ) )
                continue;
            compacted.push( this._combinations[i] );
        }
        this._combinations = compacted;
    }

    getTotal() {
        let total = 0;
        this._combinations.forEach(function( c ) {
            total += c.total;
        });
        return total;
    }
}

function main() {

    const nVodkas = scanf( "%d" );
    const nCombs  = scanf( "%d" );

    const values = [];
    for ( let i = 0; i < nVodkas; ++i )
        values.push( scanf( "%d" ) );

    const combCount = [];
    for ( let i = 0; i < nCombs; ++i )
        combCount.push( scanf( "%d" ) );


    const list = new CombinationList( values );
    for ( let i = 0; i < nCombs; ++i ) {
        const bonus = scanf( "%d" );
        const used  = [];
        for ( let j = 0; j < combCount[i]; ++j ) {
            used.push( scanf( "%d" ) - 1 );
        }
        list.addCombination( bonus, used );
    }

    list.optimize();
    console.log( list.getTotal() );

}
main();