Compilare: main.cpp: In function 'void show()': main.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (int j = 0; j < g[i].size(); j++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void show2()': main.cpp:38:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for (int j = 0; j < gt[i].size(); j++) { | ~~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:46:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for (int i = 0; i < g[x].size(); i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfs2(int)': main.cpp:57:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for (int i = 0; i < gt[x].size(); i++) { | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for (int j = 0; j < a[i].size(); j++) { | ~~^~~~~~~~~~~~~