Compilare: user.cpp: In function ‘void calculate(std::deque<long long int>&, long long int&, int, int)’: user.cpp:35:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (deq.size() > P) ^ user.cpp: In function ‘int main()’: user.cpp:44:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d\n", &N, &P); ^ user.cpp:45:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &x); ^ user.cpp:57:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &x); ^