Compilare: main.cpp:8:26: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] 8 | const int NMAX = 1 << 20 + 1; | ~~~^~~ main.cpp: In function 'long long int solutie(int)': main.cpp:16:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 16 | for(int r = 1; r <= n; r++) | ~~^~~~ main.cpp:19:24: warning: comparison of integer expressions of different signedness: 'std::unordered_map<int, int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 19 | while(m.size() > k) | ~~~~~~~~~^~~ main.cpp:15:22: warning: unused variable 'con' [-Wunused-variable] 15 | long long l = 1, con = 0, sol = 0; | ^~~ main.cpp: In function 'int main()': main.cpp:33:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 33 | for(int i = 1; i <= n; i++) | ~~^~~~