Compilare: user.cpp: In function ‘int main()’: user.cpp:40:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:45:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[cr]); ^ user.cpp:53:44: warning: ‘rr’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%lld %d %d\n", res, rl + 1, rr + 1); ^ user.cpp:53:44: warning: ‘rl’ may be used uninitialized in this function [-Wmaybe-uninitialized]