Compilare: main.cpp: In function 'void solve()': main.cpp:41:7: warning: unused variable 'last' [-Wunused-variable] int last = maxConex - 1; ^~~~ main.cpp: In function 'void fisier()': main.cpp:49:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("groaza.in" , "r", stdin); ^ main.cpp:50:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("groaza.out", "w", stdout); ^