Compilare: main.cpp: In function 'int main()': main.cpp:126:14: warning: variable 'slv' set but not used [-Wunused-but-set-variable] bool slv = 0; ^~~ main.cpp:76:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("obstacole.in", "r", stdin); ^ main.cpp:77:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("obstacole.out", "w", stdout); ^