/in/foo.cc: In function 'long long int gcd(long long int, long long int)':
/in/foo.cc:10:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if (k2==0) return k1; return gcd(k2,k1%k2);
  ^~
/in/foo.cc:10:24: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if (k2==0) return k1; return gcd(k2,k1%k2);
                        ^~~~~~
/in/foo.cc: In function 'void solve()':
/in/foo.cc:27:37: warning: unused variable 'd' [-Wunused-variable]
  scanf("%lld%lld",&m,&K); long long d=gcd(m,K);
                                     ^