Compilare: user.cpp: In function ‘void raise(long long unsigned int&, long long unsigned int)’: user.cpp:13:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 2; i <= P; i *= 2) ^ user.cpp:18:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i / 2 < P) ^ user.cpp: In function ‘int main()’: user.cpp:31:32: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long unsigned int*’ [-Wformat=] fscanf(fin, "%d %d", &N, &P); ^ user.cpp:31:32: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘long long unsigned int*’ [-Wformat=] user.cpp:35:26: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long unsigned int’ [-Wformat=] fprintf(fout, "%d", N); ^ user.cpp:31:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &N, &P); ^