/in/foo.cc: In function 'long long int getpos(long long int)':
/in/foo.cc:98:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
         if(vis[u]) continue; vis[u]=1;
         ^~
/in/foo.cc:98:30: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         if(vis[u]) continue; vis[u]=1;
                              ^~~
/in/foo.cc: In function 'long long int up_find(long long int, long long int, long long int)':
/in/foo.cc:114:8: warning: unused variable 'Max' [-Wunused-variable]
     ll Max=0;
        ^~~
/in/foo.cc: In function 'long long int the_max(long long int, long long int)':
/in/foo.cc:125:8: warning: unused variable 't' [-Wunused-variable]
     ll t=dep[x]-dep[to];
        ^
/in/foo.cc: In function 'long long int down_find(long long int, long long int, long long int)':
/in/foo.cc:142:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
         mid=l+r>>1;
             ~^~
/in/foo.cc: In function 'long long int getpos(long long int)':
/in/foo.cc:107:12: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
     return p;
            ^