Compilare: user.cpp: In function ‘int IsInArray(int)’: user.cpp:16:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v1 < x && x <= v2) ^ user.cpp:16:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v1 < x && x <= v2) ^ user.cpp:20:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(v2 < x && x <= v3) ^ user.cpp:20:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(v2 < x && x <= v3) ^ user.cpp: In function ‘int main()’: user.cpp:45:13: warning: unused variable ‘begin’ [-Wunused-variable] clock_t begin = clock(); ^ user.cpp:50:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &T); ^ user.cpp:54:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &n, &r); ^