#include #include using namespace std; int main() { int n,a1,a2,b1,b2,c1,c2; cin>>n>>a1>>a2>>b1>>b2>>c1>>c2; int sum1=(n+a1-1)/a1a2; int sum2=(n+b1-1)/b1b2; int sum3=(n+c1-1)/c1*c2; if(sum1<sum2&&sum1<sum3) { cout<<sum1; } if(sum2<sum1&&sum2<sum3) { cout<<sum2; } if(sum3<sum1&&sum3<sum2) { cout<<sum3; } return 0; }