Compilare: main.cpp: In function 'int main()': main.cpp:64:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(int j = 0; j < v[i].size(); j ++){ | ~~^~~~~~~~~~~~~ main.cpp:90:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(int i = 0; i < path.size(); i ++){ | ~~^~~~~~~~~~~~~