let inpt = readLine()!.split(separator: " ").map{Int($0)}

func sqrt(_ min:Double, _ max:Double, _ target:Double)->Int {
    if(max-min <= 0.0001) {
        if(min*min>=target) {
            return Int((min*2).rounded(.down)) + 1
        } else {
            return Int((max*2).rounded(.down)) + 1 
        }
    }
    let mid = (max + min) / 2.0
    if(mid * mid >= target) {
        return sqrt(min, mid, target)
    } else {
        return sqrt(mid, max, target)
    }
}

func sqrtInt(_ min:Int, _ max:Int, _ target:Int)->Int {
    if(max-min==0) {
        return max*2+1
    }
    if(max-min<=1) {
        if(max*max == target) {
            return max*2+1
        } else if(min*min == target) {
            return min*2+1
        } else {
            return -1
        }
    }
    
    let mid = (max+min) / 2
    if(mid*mid>target) {
        return sqrtInt(min, mid, target)
    } else {
        return sqrtInt(mid, max, target)
    }
    
}

let hankei2 = inpt[0]!*inpt[0]!+inpt[1]!*inpt[1]!
var ans = sqrtInt(0, hankei2, hankei2)
if(ans < 0) {
    ans = sqrt(0, Double(hankei2), Double(hankei2));
}
print(ans)