-(void)jumpVC:(UIViewController *)vc{

NSArray *vcs = self.navigationController.viewControllers;

NSMutableArray *newVCS = [NSMutableArray array];

if ([vcs count] > 0) {

for (int i=0; i < [vcs count]-1; i++) {

[newVCS addObject:[vcs objectAtIndex:i]];

}

}

[newVCS addObject:vc];

[self.navigationController setViewControllers:newVCS animated:YES];

}

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