Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:16:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(i=0;i<adjList[x].size();++i){ | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:70:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | for(i=0;i<low.size();++i){ | ~^~~~~~~~~~~ main.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | for(j=0;j<x.second.size();++j){ | ~^~~~~~~~~~~~~~~~ main.cpp:90:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(i=0;i<res.size();++i){ | ~^~~~~~~~~~~ main.cpp:91:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for(j=0;j<res[i].size();++j){ | ~^~~~~~~~~~~~~~