#include <stdio.h>
int main(){
int N,U,D;
int len=0;
int direction=1;
int count=0;
if (scanf("%d",&N)!=EOF && scanf("%d",&U)!=EOF && scanf("%d",&D)!=EOF){
while (len<N){
if (direction==1){len = len+direction*U;}
if (direction==-1){len = len+direction*D;}
direction = direction*-1;
count++;
if (len>=N){break;}
}
printf("%d",count);
}else{
printf("something wrong when input N,U,D");
}
return 0;
}
