Compilare: main.cpp: In function 'int main()': main.cpp:38:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | {for(j=0; j<ctc[i].size(); j++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs1(int)': main.cpp:60:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(i=0; i<a[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:71:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | for(i=0; i<ta[x].size(); i++) | ~^~~~~~~~~~~~~