Compilare: user.cpp: In function ‘void solve(std::vector<int>)’: user.cpp:12:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<=v.size(); i++) ^ user.cpp:14:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<=v.size(); i++) ^ user.cpp:15:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=i+1; j<=v.size(); j++) ^ user.cpp:22:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int p=0; p<v.size(); p++) ^ user.cpp: In function ‘int main()’: user.cpp:32:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("razboi2.in", "r", stdin); ^ user.cpp:33:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("razboi2.out", "w", stdout); ^ user.cpp:35:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &N); ^ user.cpp:39:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &aux); ^