/in/foo.cc: In function 'int main()':
/in/foo.cc:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 1; i <= v.size() - 1; i++)
                    ~~^~~~~~~~~~~~~~~
/in/foo.cc:44:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 1; i < v.size() - 1; i++)
                    ~~^~~~~~~~~~~~~~
/in/foo.cc: In function 'bool Cmp(Warrior, Warrior)':
/in/foo.cc:17:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^