function sumseconds (input){

    let timeFirst= (input.shift());
    let timeSecond= (input.shift());
    let timeThird= (input.shift());
    let totaltime = timeFirst + timeSecond + timeThird;
     console.log(totaltime);
   let minutes = Math.floor(totaltime/60);
    let seconds = (totaltime %60 );

    if (seconds<10){
    console.log (`${minutes}:0${seconds}`)
    }
    else {
        console.log(`${minutes}:${seconds}`)
    }
}