/in/foo.cc: In function 'int main()':
/in/foo.cc:70:12: warning: unused variable 'mp' [-Wunused-variable]
  int mi,ma,mp=-inf,mo=inf,l=0,r,mid,ans,maxa;
            ^~
/in/foo.cc:70:20: warning: unused variable 'mo' [-Wunused-variable]
  int mi,ma,mp=-inf,mo=inf,l=0,r,mid,ans,maxa;
                    ^~
/in/foo.cc:70:41: warning: unused variable 'maxa' [-Wunused-variable]
  int mi,ma,mp=-inf,mo=inf,l=0,r,mid,ans,maxa;
                                         ^~~~
/in/foo.cc:93:8: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d",ans);
  ~~~~~~^~~~~~~~~~
/in/foo.cc:30:20: warning: 'ma' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return x/gcd(x,y)*y;
                    ^
/in/foo.cc:70:9: note: 'ma' was declared here
  int mi,ma,mp=-inf,mo=inf,l=0,r,mid,ans,maxa;
         ^~
/in/foo.cc:85:7: warning: 'mi' may be used uninitialized in this function [-Wmaybe-uninitialized]
  r=lcm(-mi,ma);
    ~~~^~~~~~~~