Compilare: main.cpp: In instantiation of 'std::vector<int> Graf<T>::findOrder(int, const std::vector<std::vector<int> >&) [with T = int]': main.cpp:303:36: required from here main.cpp:114:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 114 | if(R.size() < n) R.clear(); | ~~~~~~~~~^~~ main.cpp: In instantiation of 'int Graf<T>::shortestBridge(const std::vector<std::vector<int> >&) [with T = int]': main.cpp:318:33: required from here main.cpp:191:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 191 | if(0 <= nx && nx < grid.size() && 0 <= ny && ny < grid.size()){ | ~~~^~~~~~~~~~~~~ main.cpp:191:65: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 191 | if(0 <= nx && nx < grid.size() && 0 <= ny && ny < grid.size()){ | ~~~^~~~~~~~~~~~~ main.cpp: In instantiation of 'void Graf<T>::islandDFS(const std::vector<std::vector<int> >&, std::vector<std::vector<int> >&, int, int, int) [with T = int]': main.cpp:177:21: required from 'int Graf<T>::shortestBridge(const std::vector<std::vector<int> >&) [with T = int]' main.cpp:318:33: required from here main.cpp:36:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(0 <= newx && newx < grid.size() && 0 <= newy && newy < grid.size()){ | ~~~~~^~~~~~~~~~~~~ main.cpp:36:69: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 36 | if(0 <= newx && newx < grid.size() && 0 <= newy && newy < grid.size()){ | ~~~~~^~~~~~~~~~~~~