granita.cpp: In function 'int main()': granita.cpp:25: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x granita.cpp:25: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x granita.cpp:26: error: 'pq' was not declared in this scope granita.cpp:26: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x granita.cpp:30: warning: comparison between signed and unsigned integer expressions