scor2.cpp: In function 'void dfs(int)': scor2.cpp:13: warning: comparison between signed and unsigned integer expressions scor2.cpp: In function 'int main()': scor2.cpp:61: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x scor2.cpp:61: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x scor2.cpp:62: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x scor2.cpp:62: warning: extended initializer lists only available with -std=c++0x or -std=gnu++0x scor2.cpp:26: warning: unused variable 't'