/in/foo.cc: In function 'void print(int)':
/in/foo.cc:7:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0; i<st[x].size(); i++)
                ~^~~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:12:36: warning: iteration 50001 invokes undefined behavior [-Waggressive-loop-optimizations]
  for (int i=1; i<=50002; i++) mx[i]=100;
                               ~~~~~^~~~
/in/foo.cc:12:17: note: within this loop
  for (int i=1; i<=50002; i++) mx[i]=100;
                ~^~~~~~~