function solution(m, musicinfos) {
    var answer = '';
    
    const getMinutes = hhmm => {
        const [hh, mm] = hhmm.split(':')
        return +hh * 60 + +mm;
    }
    
    
    const firstPitch = m[0]    
    
    const isMatched = (fullStream, stream) => {
        const findedIndex = fullStream.indexOf(stream)
        
        if(findedIndex!==-1){
            if(fullStream[findedIndex + stream.length] === '#'){
                return isMatched(fullStream.slice(findedIndex + stream.length +1) , stream)
            }else{
                return true;
            }
        }
        
        return false;
    }
    
    const matched = []

    musicinfos.map(musicinfo => {
        const [start, end, name, stream] = musicinfo.split(',')
        const duration = getMinutes(end) - getMinutes(start)
        
        const streamLength = stream.split('').filter(c => c !=='#').length;
        const repeatTimes = Math.floor(duration/streamLength);
        let remainTimes = duration % streamLength;
     
        let fullStream = stream.repeat(repeatTimes) 
        let i = 0
                
        while(remainTimes){
            const pitch = stream[i]
            const nextPitch = stream[i+1]

            fullStream += pitch
            i++

            if(nextPitch==='#'){
                fullStream += '#' 
                i++
            }
      
            remainTimes--
        }
        
        return [duration, name, fullStream]
        
    }).sort((a,b) => a[0]>b[0] ? 1 : -1).forEach((musicinfo => {
        const [duration , name, fullStream] = musicinfo;

        if(isMatched(fullStream, m)){
            matched.push([name, duration]);
        }
    }))
        
    return matched.length ? matched.pop()[0] : "(None)";
}