nodes[i].remAllPaths();
if (nodes[i] instanceof Junction){
((Junction)nodes[i]).updateAllAvailableRoads();
}
}
ShortestPathCalculator spcalculator = new ShortestPathCalculator();
spcalculator.calcAllShortestPaths(infra);
/*Validation validation = new Validation(infra);
validation.validate();*/
}catch(Exception e){
e.printStackTrace();