Compilare: main.cpp: In function 'int app(int, int, std::vector<std::pair<int, int> >)': main.cpp:156:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 156 | for(int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'std::pair<int, int> corespondent(int, std::vector<std::pair<int, int> >)': main.cpp:175:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 175 | for(int i = 0; i < v.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:324:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 324 | for(int i = 0; i < l.size(); i++) | ~~^~~~~~~~~~