Compilare: main.cpp: In function 'void insert(treap*&, int, int)': main.cpp:86:77: warning: narrowing conversion of 'val' from 'int' to 'ull {aka long long unsigned int}' inside { } [-Wnarrowing] treap *nod = new treap{(int)(1LL * rng() % MOD), val, 1, val, nill, nill}; ^ main.cpp: In function 'void BUNA(const string&)': main.cpp:21:62: 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:21:62: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]