Compilare: main.cpp: In function 'std::vector<int> berarii2(std::vector<std::vector<int> >&, std::vector<int>)': main.cpp:34:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | for ( int i = 0 ; i < berarii.size(); i ++ ){ | ~~^~~~~~~~~~~~~~~~ main.cpp:36:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | for( int j = 1 ; j <= graph.size() ; j++ ) { | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:65:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | for ( int i = 1 ; i < solution.size() - 1; i ++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:69:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for ( int i = 1 ; i < solution.size() - 1; i ++ ) { | ~~^~~~~~~~~~~~~~~~~~~~~