Farmer John has installed a new system of N−1N−1 pipes to transport milk between the NN stalls in his barn (2≤N≤50,0002≤N≤50,000), conveniently numbered 1…N1…N. Each pipe connects a pair of stalls, and all stalls are connected to each-other via paths of pipes. FJ is pumping milk between KK pairs of stalls (1≤K≤100,0001≤K≤100,000). For the iith such pair, you are told two stalls sisi and titi, endpoints of a path along which milk is being pumped at a unit rate. FJ is concerned that some stalls might end up overwhelmed with all the milk being pumped through them, since a stall can serve as a waypoint along many of the KK paths along which milk is being pumped. Please help him determine the maximum amount of milk being pumped through any stall. If milk is being pumped along a path from sisi to titi, then it counts as being pumped through the endpoint stalls sisi and titi, as well as through every stall along the path between them.
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