// C++ fake virus

#include <stdlib.h>

#include<iostream>
using std::cout;
using std::cin;
using std::endl;

#include<ctime>

double wait(double d){
  int s=static_cast<int>(d*CLOCKS_PER_SEC);
  clock_t e=clock()+s;
  double y=9;
  while(clock()<e){
    if(y<3)y=y+2.3;
    else y=y-2.45;
  }
  return y;
}

int main(){
  int x=-1;
  char x2[1024];
  int a=-1;
  int b=10;
  double y=9;
  while(x<1&&a<b){
    cout<<"how many viruses do you want? (answer using digits)"<<endl;
    cin>>x2;
    x=atoi(x2);
    if(x>10){
      cout<<"But I don't have that many viruses :-("<<endl;
      x=-1;
    }
    if(x>0)a--;
    a++;
  }
  if(a<b){
    cout<<"preparing to install "<<x<<" virus(es)..."<<endl;
    y=wait((rand()%x+x)/2);
    char z[1024];
    int go=0;
    while(a<b){
      cout<<"Are you sure you want to install "<<x<<" virus(es)? (yes or no)"<<endl;
      cin>>z;
      if(z[0]=='y'||z[0]=='n')a=b;
      a++;
    }
    if(z[0]=='n')cout<<"Have a nice day!"<<endl;
    else if(z[0]=='y'){
      cout<<"installing first virus..."<<endl;
      for(int i=1;i<=x;i++){
        y=wait(y);
        cout<<"installation complete"<<endl;
      }
      cout<<"Success!"<<endl;
    }
    else cout<<"only "<<b<<" invalid inputs are allowed"<<endl;
  }
  else cout<<"only "<<b<<" invalid inputs are allowed"<<endl;
  y=wait(2);
  return 0;
}