atac1.cpp: In function 'int main()': atac1.cpp:83: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x atac1.cpp:83: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x atac1.cpp:84: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x atac1.cpp:84: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x atac1.cpp:98: warning: comparison between signed and unsigned integer expressions