Compilare: main.cpp: In function 'int main()': main.cpp:37:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(j=0;j<ctc[i].size();j++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:59:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(i=0;i<a[x].size();i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:69:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 69 | for(i=0;i<ta[x].size();i++) | ~^~~~~~~~~~~~~