Compilare: user.cpp: In function ‘int binarySearch(int, const int&)’: user.cpp:30:23: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] middle = left + right >> 1; ^ user.cpp: In function ‘int main()’: user.cpp:44:15: warning: unused variable ‘j’ [-Wunused-variable] int N, i, j, k; ^ user.cpp:44:18: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] int N, i, j, k; ^ user.cpp:42:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("heavymetal.in", "r", stdin); ^ user.cpp:43:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("heavymetal.out", "w", stdout); ^ user.cpp:45:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &N); ^ user.cpp:47:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &V[i].left, &V[i].right); ^