foo.c: In function 'main':
foo.c:3:1: error: 'reutrn' undeclared (first use in this function)
 reutrn 0;
 ^~~~~~
foo.c:3:1: note: each undeclared identifier is reported only once for each function it appears in
foo.c:3:8: error: expected ';' before numeric constant
 reutrn 0;
        ^

自豪的采用HydroJudge(https://github.com/hydro-dev/Hydro)进行评测。