Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:59:13: warning: unused variable 'mx2' [-Wunused-variable] int mx2 = 0; ^~~ main.cpp: In function 'int main()': main.cpp:118:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare3.in", "r", stdin); ^ main.cpp:119:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("plimbare3.out", "w", stdout); ^