Compilare: user.cpp: In function ‘int main()’: user.cpp:51:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (deque1.size() > P) ^ user.cpp:83:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (deque2.size() > P) ^ user.cpp:26:30: 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:27:23: 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:44:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &x); ^