computational-problem public under problem 23 List Picture As a command %3 n0 computational-problem n2 distributed-consensus n0->n2 n3 halting-problem n0->n3 n4 maximum-flow-problem n0->n4 n5 p-versus-np-problem n0->n5 n6 shortest-path n0->n6 n1 problem n1->n0