/in/foo.cc: In function 'void Dij(int, Edge*)':
/in/foo.cc:18:21: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 #define FORR(i,a,b) for(register int i=(a);i<=(b);++i)
                     ^
/in/foo.cc:61:3: note: in expansion of macro 'FORR'
   FORR(i,1,n) d[i]=INF; d[s]=0;
   ^~~~
/in/foo.cc:61:25: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   FORR(i,1,n) d[i]=INF; d[s]=0;
                         ^