\includeproblem{soildrilling}
\includeproblem{errorcorrection}
\includeproblem{carrylesssquareroot}
\includeproblem{evenorodd}
\includeproblem{perfectflush}
\includeproblem{balancedanimals}
\includeproblem{birthdayparadox}
\includeproblem{coloringgraphedgesgame}
\includeproblem{radioprize}
\includeproblem{blackandwhite}
\includeproblem{interstellartravel}
