Compilare: main.cpp: In function 'int main()': main.cpp:22:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi3.in", "r", stdin); ^ main.cpp:23:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cuburi3.out", "w", stdout); ^ main.cpp: In function 'void read()': main.cpp:32:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld", &n); ^ main.cpp:35:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld", &l, &w); ^ main.cpp: In function 'void bins(ll)': main.cpp:55:18: warning: 'm' may be used uninitialized in this function [-Wmaybe-uninitialized] ll l=1, r=v, m; ^