func_code_string: #include <bits/stdc++.h>   using namespace std;   template <class T>   inline void umax(T &a, T b) {     if (a < b) a = b;   }   template <class T>   inline void umin(T &a, T b) {     if (a > b) a = b;   }   const int N = 2e5;   long long X, Y, x[N], y[N];   long long nx, bx;   long long ny, by;   long long basx, basy;   int main() {     cin >> nx >> bx;     for (int i = 1; i <= nx; i++) cin >> x[i];     cin >> ny >> by;     for (int i = 1; i <= ny; i++) cin >> y[i];     basx = basy = 1;     for (int i = nx; i >= 1; i--) {       X += basx * x[i];       basx *= bx;     }     for (int i = ny; i >= 1; i--) {       Y += basy * y[i];       basy *= by;     }     if (X < Y)       cout <<  < ;     else if (X > Y)       cout <<  > ;     else       cout <<  = ;     return !1;   }   