HDU 1049

#include <iostream>

using namespace std;

int main(){
int n,u,d,sum;
while(cin>>n>>u>>d&&n){

int k = (n-u)/(u-d);
if( (n-u)%(u-d) )

k++;

sum=k*2+1;
cout<<sum<<endl;

}
return 0;
}

#include <iostream>

using namespace std;

int main(){
int n,u,d,sum;
while(cin>>n>>u>>d&&n){

int k = (n-u)/(u-d);
int d= (n-u)%(u-d);//在这里对d又定义了一次int型，提交为WA，去掉int即可AC
if(d)
k++;

sum=k*2+1;
cout<<sum<<endl;

}
return 0;
}