func arrayManipulation(n int32, queries [][]int32) int64 {
    a := make([]int64, n + 1)
    qLen := len(qs)
    for i:=0; i<qLen; i++ {
        p := int(qs[i][0])
        q := qs[i][1]
        sum := int64(qs[i][2])
        a[p] += sum
        if((q + 1) <= n) {
            a[q + 1] -= sum
        }
    }

    var x, max int64 = 0, 0
    for i:=1; i<=int(n); i++ {
        x += a[i]
        if max < x {
            max = x
        }
    }

    return max

}