View Code of Problem 69

#include <iostream>
#include<algorithm>

using namespace std;
int f(int x)
{
    int y;
    if(x<1) y=x;
    else if(x>=1&&x<10) y=2*x-1;
    else if(x>=10) y=3*x-11;
    return y;
}


int main()
{
  int x;
  int m;
  cin>>x;
  m=f(x);
  cout<<m<<endl;
    return 0;
}

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