Cumulative accreted planetesimal mass as a function of time for all simulations in scheme 1 (left) and in scheme 2 (right). The corresponding accretion efficiency was calculated by dividing with the total planetesimal mass that formed in the system at the time of disk dissipation. Each scatter point in the plot is one collision event; however, since we performed three simulations per parameter set and show the combined results, the number of collisions in one simulation should be three times smaller than in this plot. The maximum obtained accretion efficiency onto any planet in scheme 1 is 5%, which corresponds to ~1 M_⊕. The accretion efficiency is much higher for planetesimals that formed inside the feeding zone, and it does not change significantly with planetesimal size. The maximum accretion efficiency obtained for any planet in scheme 2 is 10%, which corresponds to a mass of ~3 M_⊕.