/in/foo.cc: In function 'LL read()':
/in/foo.cc:55:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
         if(c=='-')f=-1;c=getchar();
         ^~
/in/foo.cc:55:24: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
         if(c=='-')f=-1;c=getchar();
                        ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:105:40: warning: format '%d' expects argument of type 'int', but argument 2 has type 'LL {aka long long int}' [-Wformat=]
     if(O[i].opt==2)printf("%d\n",ans[i]);
                                        ^