Compilare: user.cpp: In function ‘void answerQueries()’: user.cpp:165:13: warning: unused variable ‘minWanted’ [-Wunused-variable] int minWanted = depth[y] - depth[x]; ^ user.cpp: In function ‘void readInput()’: user.cpp:39:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &Q); ^ user.cpp:42:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %c", &x, &y, &c); ^ user.cpp: In function ‘void answerQueries()’: user.cpp:164:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int x, y; scanf("%d%d", &x, &y); ^