Compilare: user.cpp: In function ‘int logpow(long long int, int)’: user.cpp:15:5: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] if (b & 1) ^~ user.cpp:17:7: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ b >>= 1; ^ user.cpp: In function ‘int main()’: user.cpp:34:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < s.size(); i++) { ~~^~~~~~~~~~