Compilare: user.cpp: In function ‘int main()’: user.cpp:7:26: warning: integer overflow in expression [-Woverflow] #define INF ((1 << 31) - 1) ^ user.cpp:22:32: note: in expansion of macro ‘INF’ vector < int > LIS(N + 1 , INF); ^ user.cpp:7:26: warning: integer overflow in expression [-Woverflow] #define INF ((1 << 31) - 1) ^ user.cpp:28:22: note: in expansion of macro ‘INF’ if(LIS[i] == INF) ^ user.cpp:7:26: warning: integer overflow in expression [-Woverflow] #define INF ((1 << 31) - 1) ^ user.cpp:33:22: note: in expansion of macro ‘INF’ if(LIS[i] != INF) ^ user.cpp:11:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("scmax.in", "r", stdin); ^ user.cpp:12:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("scmax.out", "w", stdout); ^ user.cpp:15:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:20:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &A[i]); ^