Compilare: main.cpp: In function 'void dfs()': main.cpp:15:9: warning: unused variable 'i' [-Wunused-variable] 15 | int i; | ^ main.cpp: In function 'int main()': main.cpp:43:15: warning: unused variable 'j' [-Wunused-variable] 43 | int k, i, j, cnt = 0, st, dr, l; | ^ main.cpp:43:27: warning: unused variable 'st' [-Wunused-variable] 43 | int k, i, j, cnt = 0, st, dr, l; | ^~ main.cpp:43:31: warning: unused variable 'dr' [-Wunused-variable] 43 | int k, i, j, cnt = 0, st, dr, l; | ^~ main.cpp:43:35: warning: unused variable 'l' [-Wunused-variable] 43 | int k, i, j, cnt = 0, st, dr, l; | ^