Compilare: user.cpp: In function ‘long long unsigned int pwr(long long unsigned int, long long unsigned int)’: user.cpp:15:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ullong i=0;(1<<i)<=p;i++) ~~~~~~^~~ user.cpp: In function ‘int main()’: user.cpp:64:32: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] for(i=0;i<v.size();i++)if(v[i]) ^~ user.cpp:66:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ n%=9973; ^