zad11 loops

let lines = +gets();
let sum = 0;
let resultStr = '';
let counter = 0;


let newLine = gets();
if (!isNaN(newLine)) {
    sum += +newLine;
    counter++;

} else if (isNaN(newLine)) {
    resultStr = `${resultStr}-${newLine}`;
}

for (let i = 0; i < lines - 1; i++) {

    let nextLine = gets();
    if (nextLine === '') {
        continue;
    }

    if (!isNaN(newLine) && !isNaN(nextLine)) {
        sum += +nextLine;
        counter++;
    } else if (isNaN(newLine) && isNaN(nextLine)) {
        resultStr = `${resultStr}-${nextLine}`;
    } else if (!isNaN(newLine) && isNaN(nextLine)) {
        console.log(sum);
        sum = 0;
        counter = 0;
        resultStr = `${resultStr}-${nextLine}`
    } else if (isNaN(newLine) && !isNaN(nextLine)) {
        if (resultStr[0] === '-') {
            console.log(resultStr.slice(1,));
        } else {
            console.log(resultStr);
        }

        resultStr = '';
        sum += +nextLine;
    }
    newLine = nextLine
}
if (resultStr[0] === '-') {
    console.log(resultStr.slice(1,));
} else if (resultStr.length != 0) {
    console.log(resultStr);
}
if (sum != 0 || counter > 0) {
    console.log(sum);