You have been taken prisoner with 9 other people of similar shape and physique as yourself. There is a race, all 10 of you are to run 500 meters. But ALSO - on the finnish line you must survive being shot 3 times with 7.62 caliber and 10 times with 9mm rounds to win your freedom. After the first 3 are in goal the rest will be killed of by explosives planted inside them.
Your captors has granted you what you need to make any armor from any combination of any material available on earth, with scientists and engineers sitting on all current known technology. (No science fiction or fantasy here)
What materials would you make it from and why, to make it as weight efficent and withstanding as possible?