Compilare: main.cpp: In function 'int main()': main.cpp:153:18: warning: unused variable 'j' [-Wunused-variable] 153 | int i,cont=0,j; | ^ main.cpp: In function 'void citire()': main.cpp:183:9: warning: unused variable 'i' [-Wunused-variable] 183 | int i,x,y; | ^ main.cpp: In function 'void dfs(int, int)': main.cpp:200:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 200 | for(i=0;i<a[x].size();i++) | ~^~~~~~~~~~~~