Road and Flyover Planning RadhaKrishna www.geocities.com/ hellokrishna
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Road and Flyover Planning
RadhaKrishna
www.geocities.com/hellokrishna
2 Roads Junction (?)
0 Flyovers
3 Road Junction
2 FlyOvers
4 Road Junction
6 Flyovers
N Road JunctionPeople from one road need access to N-1 RoadsSo N * (N-1) FlyoversAll the ways can have ground level access to next RoadSo N*(N-1) – NOne Pair of Roads (non-next) can be on ground levelSo N*(N-1)-N-2(For 3 road junction, non-next does not exist. So free left is same as non-next pair roads.
Optimizing 4 Road Junction
Make it 2 three-road junctions2 + 2 < 6
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