function solve(arr) {
    let middleNum = [];
    let rightSum = 0;
    let leftSum = 0;

    // if (arr.length === 0) {
    //     console.log(0)
    // }

    // if (arr.length % 2 == 0) {
    //     middleNum = arr.length / 2;
    // } else {
    //     middleNum = parseInt(arr.length / 3)
    // }
    let limit = arr.length;
    for (let currentIndex = 0; currentIndex < limit; currentIndex++) {
        leftSum = 0;
        rightSum = 0;

        for (let i = currentIndex - 1; i >= 0; i--) {
            leftSum += arr[i];
        }
        for (let j = currentIndex + 1; j < arr.length; j++) {
            rightSum += arr[j];
        }

        if (rightSum === leftSum) {
            middleNum=currentIndex;
            break;
        }
    }
    //arr.splice(0, middleNum + 1);
    // for (let n = 0; n < arr.length; n++) {
    //     leftSum += arr[n];
    // }
    if (rightSum === leftSum) {
        console.log(middleNum);
    }
    else {
        console.log(`no`)
    }

}