I think there is something wrong with your code.
For exmaple, I have modified the Makefile and tried the following two commands,
CFLAGS= -std=c++11 -march=native -O3 -Wno-deprecated
and
CFLAGS= -std=c++11 -march=native -O0 -Wno-deprecated
I got 8 and 13 solutions respectively.
I think there is something wrong with your code.
For exmaple, I have modified the
Makefileand tried the following two commands,CFLAGS= -std=c++11 -march=native -O3 -Wno-deprecated
and
CFLAGS= -std=c++11 -march=native -O0 -Wno-deprecated
I got 8 and 13 solutions respectively.