/in/foo.cc: In function 'void dfs(int, int)':
/in/foo.cc:11:29: error: 'memset' was not declared in this scope
     memset(d,10000,sizeof(d));
                             ^
/in/foo.cc:21:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
         if(d[i]>n) break;sum=max(sum,i);
         ^~
/in/foo.cc:21:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         if(d[i]>n) break;sum=max(sum,i);
                          ^~~