Compilare: main.cpp: In function 'bool solve()': main.cpp:100:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | for(int i = index + 1; i < buffer.size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp:99:9: warning: unused variable 'k' [-Wunused-variable] 99 | int k = 0; | ^