Compilare: user.cpp: In function ‘int main()’: user.cpp:65:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<div.size();++j) ^ user.cpp:68:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<div.size();++j) ^ user.cpp:52:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir1000.in","r",stdin); ^ user.cpp:53:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsir1000.out","w",stdout); ^ user.cpp:55:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^ user.cpp:61:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&T); ^