Compilare: main.cpp: In function 'void dfs(int)': main.cpp:77:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 77 | for(i = 0; i < g[x].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfst(int)': main.cpp:88:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for(i = 0; i < gt[x].size(); i++) | ~~^~~~~~~~~~~~~~