function solve(input){
    let band = {};
    let bandCount = {};
    let totalTime = 0;
    let group = input.pop();
    let arr = [];
    let set = new Set();
    for(let line of input){
        if(line === 'start of concert'){
            break;
        }
        let [addOrPlay, bandName, timeOrSingers] = line.split('; ');
        if(addOrPlay === 'Add'){
           arr = timeOrSingers.split(', ');
           for(let i = 0; i < arr.length; i++){
            if(!band.hasOwnProperty(bandName)){
                band[bandName] = [arr[i]];
            }else if(band.hasOwnProperty(bandName)){
                band[bandName].push(arr[i]);
            }
       }
        }else if(addOrPlay === 'Play'){
            if(!bandCount.hasOwnProperty(bandName)){
                bandCount[bandName] = +(timeOrSingers);
                totalTime += +(timeOrSingers);
            }else{
                bandCount[bandName] += +(timeOrSingers);
               totalTime += +(timeOrSingers);
            }
        }
    }
    let arrayBandCount = Object.entries(bandCount);
    arrayBandCount.sort((a, b) => b[1] - a[1] || a[0].localeCompare(b[0]));
    console.log(`Total time: ${totalTime}`);
    for(let item of arrayBandCount){
        console.log(`${item[0]} -> ${item[1]}`);
    }

    let result = Object.entries(band);
    console.log(group);
    for(let j = 0; j < result.length; j++){

    for(let i = 0; i < result[j][1].length; i++){
        if(result[j][1][i] === result[0][1][i+1]){
            let index = result[j][1].indexOf(result[j][1][i+1]);
            result[j][1].splice(index, 1);
        }
    }
    if(result[j][0] === group){
        for(let boy of result[j][1]){
            set.add(boy);
        }
    }
   }
   let arrResult = Array.from(set);
   console.log(`=> ${arrResult.join('\n=> ')}`);

}