/in/foo.cc: In function 'int bfs(point)':
/in/foo.cc:44:81: warning: 'sc' may be used uninitialized in this function [-Wmaybe-uninitialized]
     point(int x,int y,int s,int sc,set<pii> m):x(x),y(y),step(s),score(sc),Set(m){}
                                                                                 ^
/in/foo.cc:76:17: note: 'sc' was declared here
             int sc;
                 ^~