Savior (Skillet song) Savior (Skillet song) "Savior" is the third single from the Christian rock band Skillet's fifth studio album, "Collide". It has been to date the band's fifth highest mainstream rock "Billboard" charting single, peaking at No. 26. The song is on the Digital Praise PC game Guitar Praise. Savior peaked at No. 26 on the Billboard rock charts and No. 21 on the ChristianRock.net Annual Top 100. The music video shows the band playing in both a house and at a park at night. It became only the second Skillet video to have a story in the video, after "Best Kept
Envy-free item assignment the agents' utilities are not additive, the MNW solution is not necessarily EF1; but if the agents' utilities are at least submodular, the MNW solution satisfies a weaker property called "Marginal-Envy-Freeness except-1-item" (MEF1). There is an alternative criterion called Envy-freeness-except-cheapest (EFx): For each two agents A and B, if we remove from the bundle of B "any" item, then A does not envy B. EFx is strictly stronger than EF1. As of this writing, it is not known whether EFx allocations always exist. Given an allocation "X", define the envy ratio of "i" in "j" as: so the ratio is