function exam(input){
    let num = +input.shift()
    let even = 0
    let odd = 0

    for(let i = 1; i <= num; i++){
        let currentNumber = +input.shift()
        if(i % 2 == 0){
            even += currentNumber
        } else {
            odd += currentNumber
        }

    }
    if(even==odd){
        console.log(`Yes\nSum = ${odd}`)
    } else {
        let diff = Math.abs(even-odd)
        console.log(`No\nDiff = ${diff}`)
    }
}
exam([4,10,50,60,20])