Compilare: main.cpp: In function 'int main()': main.cpp:118:42: warning: narrowing conversion of 'rng.std::mersenne_twister_engine<_UIntType, __w, __n, __m, __r, __a, __u, __d, __s, __b, __t, __c, __l, __f>::operator()<long unsigned int, 32ul, 624ul, 397ul, 31ul, 2567483615ul, 11ul, 4294967295ul, 7ul, 2636928640ul, 15ul, 4022730752ul, 18ul, 1812433253ul>()' from 'std::mersenne_twister_engine<long unsigned int, 32ul, 624ul, 397ul, 31ul, 2567483615ul, 11ul, 4294967295ul, 7ul, 2636928640ul, 15ul, 4022730752ul, 18ul, 1812433253ul>::result_type {aka long unsigned int}' to 'int' inside { } [-Wnarrowing] Treap *aux = new Treap{x, rng(), nill, nill}; ~~~^~ main.cpp: In function 'void BUNA(const string&)': main.cpp:23:62: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen((task + ".out").c_str(), "w", stdout); ^ main.cpp:23:62: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]