Compilare: user.cpp: In function ‘int main()’: user.cpp:115:58: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] RMQ[i][j] = MIN(RMQ[i - 1][j], RMQ[i - 1][j + (1 << i - 1)]); ^ user.cpp:11:29: note: in definition of macro ‘MIN’ #define MIN(x, y) ( ((x) < (y)) ? (x) : (y) ) ^ user.cpp:115:58: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] RMQ[i][j] = MIN(RMQ[i - 1][j], RMQ[i - 1][j + (1 << i - 1)]); ^ user.cpp:11:42: note: in definition of macro ‘MIN’ #define MIN(x, y) ( ((x) < (y)) ? (x) : (y) ) ^ user.cpp:103:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &N, &M); ^ user.cpp:107:21: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] insert(T, line, i); ^