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function solve(input) {

    let countPeople = Number(input.shift());


    counterBack = 0; // let ?
    counterChest = 0;
    counterLegs = 0;
    counterAbs = 0;

    counterShake = 0;
    counterBar = 0;

    counterPersonProduct = 0; // не ти трябва
    counterPersonTraining = 0; // не ти трябва

    for (let k = 0; k < countPeople; k++) {

        let train = input.shift();
        let product = input.shift(); // ?!

             if (train === "Back") {
                 counterBack++;
                 counterPersonTraining++ // не ти трябва
             } else if (train === "Chest") {
                 counterChest++;
                 counterPersonTraining++; // ...
             } else if (train === "Legs") {
                 counterLegs++;
                 counterPersonTraining++; // ...
             } else if (train === "Abs") {
                 counterAbs++;
                 counterPersonTraining++; // ...
             } else if (product === "Protein Shake") { // shake с малко S, тия неща ги копи-пействай
                 counterShake++;
                 counterPersonProduct++; // ...
             } else {
                 counterBar++;
                 counterPersonProduct++; // ...
             }



    }


 peopleTrainig = counterChest + counterLegs + counterBack + counterAbs;
  percent = (countPeople/peopleTrainig)*100;

 peopleProduct = counterShake +counterBar;
 percentProduct = (countPeople/ peopleProduct)*100;




console.log(`${counterBack} - back`)
console.log(`${counterChest} - chest`)
console.log(`${counterLegs} - legs`)
console.log(`${counterAbs} - abs`)
console.log(`${counterShake} - protein shake`)
console.log(`${counterBar} - protein bar`)
console.log(`${peopleTrainig.toFixed(2)}% - work out`) // така написано ти тук трябва да сложиш percent, a ne peopleTrainig
console.log(`${peopleProduct.toFixed(2)}% - protein`) // percentProduct

}