Compilare: user.cpp: In function ‘int main()’: user.cpp:57:53: warning: unused variable ‘yy’ [-Wunused-variable] int best_left = 0, best_right= 0, best, xx, yy, zz; ^ user.cpp:33:12: warning: unused variable ‘ras’ [-Wunused-variable] int n, ras = 0; ^ user.cpp:30:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("split.in", "r", stdin); ^ user.cpp:31:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("split.out", "w", stdout); ^ user.cpp:34:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:38:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp:28:5: warning: ‘z_lsm.68’ may be used uninitialized in this function [-Wmaybe-uninitialized] int main() ^ user.cpp:28:5: warning: ‘x_lsm.66’ may be used uninitialized in this function [-Wmaybe-uninitialized]