Compilare: user.cpp: In function ‘void ReadInput(const char*)’: user.cpp:26:12: warning: unused variable ‘start’ [-Wunused-variable] double start = clock(); ^ user.cpp:30:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d %d %d", &N, &K, &M); ^ user.cpp:32:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, FORMAT_LONG, a + i); ^ user.cpp:35:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, FORMAT_LONG, b + i); ^ user.cpp: In function ‘int main()’: user.cpp:89:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ksecv4.out", "wb", stdout); ^