SAN DIEGO -- Three men who raped two University of San Diego students during a home-invasion robbery in Mission Beach 18 months ago were each sentenced Friday to more than 316 years to life in state prison.

Donald Duante Smith, 21, Antonio Washington, 19, and Willie Louis Watkins, 32, were convicted Feb. 19 of multiple sex crimes and other offenses for raping the women and holding two other male students in a bathtub while the attacks were going on.

The perpetrators even made one of the male students try to have sex with one of the 18-year-old women, then told the male he wasn't doing it right and continued the sexual assault themselves.

"You took away everything I value in my life," one of the rape victims said to the defendants. "You took away my sense of security. You caused me to lose my best friends.

"You forced me to leave the school I had dreamed of going to for years. You made my parents sick with worry. You made me question if there is still good in all people. You changed who I was as a person. I hate everything that you have done to me."

Smith, Washington and Watkins were sentenced under California's "one-strike" law, under which every completed sex act brings a sentence of 25 years to life.

Superior Court Judge John Einhorn said each defendant had time to reflect on their actions and could have stopped their sexual assault on the victims but instead decided to "resume their sexual carnage."

Einhorn said the consecutive life sentences for the "horrific" crimes were sufficient to ensure that the defendants "spend the rest of their lives in state prison."

The judge said the sexual assaults on the victims was more than sexual gratification and was meant to "degrade and humiliate another human being."

Deputy District Attorney Patrick Espinoza said the attack -- which happened on Oct. 15, 2006, during Parents Weekend at USD -- victimized not only the four college students and their families but the beach community as well.

In arguing for the maximum term of 316 years and four months to life in prison, Espinoza told the judge that "harshness and severity is justice" and "leniency is injustice."

Espinoza told the jury during trial that the intruders -- wearing bandanas and hooded sweatshirts -- walked in through an open front door at a condominium on San Fernando Place and assaulted the victims.

The intruders -- holding what turned out to be pellet guns -- demanded money and cell phones and made one of the women perform sex acts on them, the prosecutor said.

The students did not see the faces of their attackers and weren't even sure how many there were, Espinoza said.

But days after the attack, Smith turned himself in and admitted his participation in the robbery and sexual assaults, the prosecutor said.

Washington also turned himself in and told police how he sexually assaulted the victims, according to the prosecutor.

After Watkins was arrested, he admitted going into the residence and stealing a TV, but did not admit his role in the sexual assaults. However, Watkins' DNA turned up on one of the female victims, Espinoza said.

The prosecutor said Watkins went to Mission Beach the night of the attack separately from Smith and Washington.

Once there, the defendants met up with others, forming a group of about eight to 10 people, the prosecutor said.

The larger group came across three college students near the Belmont Park roller coaster and demanded money from them, Espinoza said.

Police detained four people in connection with that robbery after the larger group split up, but the victims were unable to identify their attackers, the prosecutor said.

As the group of four was questioned, a "bold and confident" Watkins came up and told police he was their uncle, the prosecutor said.

Those detained told police later they saw Watkins with a flat-screen TV and Smith and Washington with an Xbox, DVDs, a cell phone and bank cards that were taken from the home-invasion robbery on San Fernando Place, Espinoza said.

The next day, the defendants tried to sell their stolen loot and later went to a home in National City, where Watkins was overheard admitting his role in the sexual assaults, the prosecutor said.

Friday in court, a defiant Smith said he was "railroaded" and would be vindicated by an appeal.

"I didn't do this stuff," Smith said. "I don't feel no remorse because I didn't do it."

Washington's attorney, John O'Connell, said his client was a "very remorseful kid" whose parents abandoned him when he was 8 years old.

Watkins said DNA results excluded him from committing the sexual acts.