题解如下

#include <iostream>
#include <cstdio>
#include <string>
#include <math.h>
using namespace std;

int main(){
    long long a,b;
    cin>>a>>b;
    cout<<(int)cbrt(a*a*a+3*a*a*b+3*a*b*b+b*b*b);
    return 0;
}