WA in DIEHARD

This is my code for DIEHARD. It is simple enough, and i have optimised it till i can ( i think). I have tried all test cases possible, and all of them are correct (acc. to the comments). Still i am getting Wrong answer.It could'nt be any output format problem acc to me coz we juz have to output a no. per test case and \n which i have. Please HELP!

#include<stdio.h>
int main()
{
    int t,time,a,hp;
    time=0;
    scanf("%d",&t);
    while(t--)
    {
      time=0;
      scanf("%d%d",&hp,&a);
    while(hp>0 && a>0)
       {
       hp= hp +3;
       a= a+2;
       time++;
       if(hp<=20 && a<=20)
                        {
                                hp=hp-5;
                                a=a-10;
                                if(hp>0 && a>0)
                                {
                                        time++;
                                }
                        }
        else
       if(a>=hp)
    {
        hp= hp-5;
        a=a-10;
        time++;
    }
    else
       {
           hp=hp-20;
           a=a+5;
           time++;
        }
        }
       printf("%d\n",time);
       }
       return 0;
}