Compilare: main.cpp: In function 'void debug(std::vector<int>)': main.cpp:33:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(int i = 0;i < v.size();i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:89:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<val>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 89 | for(int i = 0;i < c.size();i++) | ~~^~~~~~~~~~ main.cpp:148:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 148 | for(int i = 0;i < ans.size();i++) | ~~^~~~~~~~~~~~