perle.cpp: In function 'void dijkstra()': perle.cpp:12: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x perle.cpp:12: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x perle.cpp:22: warning: comparison between signed and unsigned integer expressions perle.cpp:30: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x perle.cpp:30: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x perle.cpp:17: warning: unused variable 'cost1' perle.cpp: In function 'int main()': perle.cpp:48: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x perle.cpp:48: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x perle.cpp:40: warning: unused variable 'k' perle.cpp:40: warning: unused variable 's'