For submission 24847517, I got linker error.
/usr/bin/ld: /home/9FXRBX/ccQMtZen.o: in function _D3std5stdio13__T5readfTPiZ5readfFxAaPiZk': prog.d:(.text._D3std5stdio13__T5readfTPiZ5readfFxAaPiZk[_D3std5stdio13__T5readfTPiZ5readfFxAaPiZk]+0x1f): undefined reference to
_D3std5stdio23__T10makeGlobalS5stdinZ10makeGlobalFNbNcNdNiZS3std5stdio4File’
/usr/bin/ld: /home/9FXRBX/ccQMtZen.o: in function _D3std5stdio16__T5readfTPiTPiZ5readfFxAaPiPiZk': prog.d:(.text._D3std5stdio16__T5readfTPiTPiZ5readfFxAaPiPiZk[_D3std5stdio16__T5readfTPiTPiZ5readfFxAaPiPiZk]+0x28): undefined reference to
_D3std5stdio23__T10makeGlobalS5stdinZ10makeGlobalFNbNcNdNiZS3std5stdio4File’
collect2: error: ld returned 1 exit status