Compilare: main.cpp: In function 'long long int rez(long long int)': main.cpp:18:35: warning: comparison of integer expressions of different signedness: 'std::unordered_map<long long int, long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare] 18 | while (dr < n && f.size() < x) | ~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:36:15: warning: unused variable 'p' [-Wunused-variable] 36 | int l, u, p = 0, a, i, st, dr, cnt = 0; | ^ main.cpp:36:22: warning: unused variable 'a' [-Wunused-variable] 36 | int l, u, p = 0, a, i, st, dr, cnt = 0; | ^ main.cpp:36:28: warning: unused variable 'st' [-Wunused-variable] 36 | int l, u, p = 0, a, i, st, dr, cnt = 0; | ^~ main.cpp:36:32: warning: unused variable 'dr' [-Wunused-variable] 36 | int l, u, p = 0, a, i, st, dr, cnt = 0; | ^~ main.cpp:36:36: warning: unused variable 'cnt' [-Wunused-variable] 36 | int l, u, p = 0, a, i, st, dr, cnt = 0; | ^~~