Compilare: main.cpp: In function 'int main()': main.cpp:65:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for(int i = 0; i < spectacole.size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~ main.cpp:78:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for(int j = 0;j < r.size(); ++j) | ~~^~~~~~~~~~