Borderou de evaluare (job #393534)

Compilare: user.cpp: In function ‘ll pow(ll, ll)’: user.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function ‘int main()’: user.cpp:10:2: warning: ‘a’ may be used uninitialized in this function [-Wuninitialized] user.cpp:24:8: note: ‘a’ was declared here user.cpp:13:3: warning: ‘b’ may be used uninitialized in this function [-Wuninitialized] user.cpp:24:11: note: ‘b’ was declared here