func_code_string: #include <bits/stdc++.h>   #pragma GCC optimize(2)   using namespace std;   const long long INF = 1e17 + 7;   const int N = 1e4 + 7;   const int M = 5e6 + 7;   long long x[N], y[N];   long long ax, ay, bx, by, a, b, t;   signed main() {     ios::sync_with_stdio(false);     cin >> x[0] >> y[0] >> ax >> ay >> bx >> by;     int n = 0;     for (; x[n] < INF && y[n] < INF; n++) {       x[n + 1] = x[n] * ax + bx;       y[n + 1] = y[n] * ay + by;       if (x[n + 1] >= INF || y[n + 1] >= INF) break;     }     cin >> a >> b >> t;     long long ans = 0;     for (int l = 0; l <= n; l++) {       for (int r = l; r <= n; r++) {         unsigned long long to =             min(abs(a - x[l]) + abs(b - y[l]), abs(a - x[r]) + abs(b - y[r]));         to += abs(x[l] - x[r]) + abs(y[l] - y[r]);         if (to <= t) ans = max(ans, r - l + 1ll);       }     }     cout << ans <<   n ;     return 0;   }   