In this repository you find my solutions to the problems posed as part of the "AlgoLab" course at ETH Zurich. (See http://www.cadmo.ethz.ch/education/lectures/HS16/algolab/index.html)
You can do whatever you want with my solutions except for claiming they are yours. The code is written by me, I did not come up with algorithmic ideas..
The test files (including reference outputs) are provided as part of the course. For some problems I added some extra test cases.
- Binary-search
- Rounding errors in Min_circle
- Use: Exact_predicates_exact_constructions_kernel.h
- Use: Exact_predicates_exact_constructions_kernel.h
- convert to double: ceil(to_double(et))
- Bias for non-negative weights max-flow-min-cost
- LP: Different kernels for different precisions (see http://doc.cgal.org/latest/Number_types/group__nt__gmp.html)
- Gmpz.h: Arbitrary precision integer
- Gmpzf.h: Multiple-precision floating-point number (m*2^e), generally faster than MP_Float.h
- Gmpq.h: Arbitrary precision rational
- MP_Float.h: Arbitrary precision float
(... spoilers below)
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(... spoilers now)
- week (5/6)
- Build the sum 100/100
- Dominoes 0
- Even Matrices 100/100
- Even Pairs 100/100
- False coin 100/100
- PotW: Deck of cards 100/100
- week (2/5)
- Evolution: 100/100 -- "Skip-tree"
- PotW: Octopussy 100/100 -- EDF* (*= with dependencies)
- week (1/5)
- PotW: Attack of the clones 100/100 -- EDF scheduling; index-tricks
- week (1/5)
- PotW: TheeV 100/100 -- Binary search, Min-Circle
- week (3/6)
- Lights at the Museum 100/100 -- Bruteforce/Split-and-List
- PotW(A): On her Majesty's secret service 100/100 -- Dijkstra; exp-bin-search w/ max. cardinality matching
- PotW(B): Poker Chips 100/100 -- Huge DP
- week (1/4)
- PotW: A New Hope 100/100 -- Big DP in heap (bottom-up)
- week (1/5)
- PotW: Knights 100/100 -- Max flow
- week (1/5)
- PotW: Stamps 100/100 -- LP
- week (1/5)
- PotW: Casino Royale 80/80 -- Mincost Max-flow; tricky bias
- week (1/4)
- PotW: Sith 100/100 -- Binary search; Delaunay (->sparse graph), max-connected-component
- week (1/4)
- Carsharing 100/100 -- Like Casino Royale (mincost-maxflow)
- PotW: Planks 60/100 -- (You can do Split-and-List)
- week (4/6)
- Placing Knights 100/100 -- Max bipartite matching
- Radiation 100/100 -- LP with tricks
- New tiles 100/100 -- DP over lines (employing inner line monotonicity)
- PotW: The Empire Strikes Back 100/100 -- LP, Delaunay
- week (2.5/4)
- DHL 60/100 -- DP, Greedy (TODO)
- Sweepers 100/100 -- Euler-tours; maxflow (bordercases with connected-components)
- PotW: The Phantom Menace 100/100 -- maxflow
- week: Christmas Challenge (Cantonal Courier) 100/100 -- maxflow (still not 100% sure why it works)