func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = 0x3f3f3f3f;   int si, lef, t0;   int a1, t1, p1;   int a2, t2, p2;   int main() {     cin >> si >> lef >> t0;     cin >> a1 >> t1 >> p1;     cin >> a2 >> t2 >> p2;     if (t1 > t2) {       swap(a1, a2);       swap(t1, t2);       swap(p1, p2);     }     long long ans = 1LL * inf * inf;     for (int i = 0;; ++i) {       if ((long long)a1 * t1 * (i - 1) > lef) {         break;       }       long long t = 0;       if (i && 1LL * a1 * i >= si && 1LL * a1 * (i - 1) < si) {         t = 1LL * a1 * t1 * (i - 1) + 1LL * (si - 1LL * a1 * (i - 1)) * t1;         if (t <= lef) {           ans = min(ans, (long long)p1 * i);         }       } else if (1LL * a1 * i < si) {         t += 1LL * a1 * t1 * i;         long long ts = si - a1 * i;         if (t + 1LL * ts * t0 <= lef) {           ans = min(ans, (long long)p1 * i);         } else {           if (t2 < t0) {             long long byte = (t + 1LL * ts * t0 - lef + t0 - t2 - 1) / (t0 - t2);             if (byte <= ts) {               long long bug = (byte + a2 - 1) / a2;               ans = min(ans, 1LL * i * p1 + 1LL * bug * p2);             }           }         }       }     }     if (ans == 1LL * inf * inf) {       ans = -1;     }     cout << ans << endl;     return 0;   }   