piscina.cpp: In function 'int main()': piscina.cpp:73: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x piscina.cpp:73: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x piscina.cpp:74: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x piscina.cpp:74: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x