Compilare: main.cpp: In function 'int max_flow(int, int)': main.cpp:89:9: warning: unused variable 'f' [-Wunused-variable] 89 | int f, flow = 0; | ^ main.cpp: In function 'void solve()': main.cpp:120:8: warning: unused variable 't1' [-Wunused-variable] 120 | ld t1 = clock(); | ^~ main.cpp:133:8: warning: unused variable 't2' [-Wunused-variable] 133 | ld t2 = clock(); | ^~