Compilare: user.cpp: In function ‘std::pair<Treap*, Treap*> split(Treap*, int)’: user.cpp:2:25: warning: integer overflow in expression [-Woverflow] #define INF (1 << 31) - 1 ^ user.cpp:169:35: note: in expansion of macro ‘INF’ nod = insert(nod, 0, pos - 1, INF); ^ user.cpp: In function ‘char nextch()’: user.cpp:12:33: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, 1, MAXBUF, fi); ^