iam starting 11th grade this year and i want to appear in IPHO for the next two years. I am pretty talented and i am aiming for two golds. i have about ten months for the qualifier in my country . i know all theory and i have a pretty good grasp . i have solved many problems from resnick halliday and about 130 from IE IRODOV . I need guidance on how to go about from here and is there any other good problem book . Also i need to know how much Math i need to know for IPHO . iam pretty good with basic calculus what more should i learn .