Compilare: main.cpp: In function 'int main()': main.cpp:19:54: warning: integer overflow in expression [-Woverflow] int c , n , i , l , ans = 0 , mx = 0 , mn = NMAX * NMAX , state ; ~~~~~^~~~~~ main.cpp:16:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ( "roboti3.in" , "r" , stdin ) ; ^ main.cpp:17:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ( "roboti3.out" , "w" , stdout ) ; ^ main.cpp:21:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d%d" , & c , & n ) ; ^ main.cpp:25:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d" , & v [ i ] ) ; ^