Compilare: user.cpp: In function ‘int main()’: user.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<M;i++) fscanf(f,"%u",&S[i]); ^ user.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) ^ user.cpp:26:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N/2+N%2;i++) ^ user.cpp:32:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=N;i++) ^ user.cpp:34:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=Q;i++) ^ user.cpp:15:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%u %u %u",&N,&Q,&M); ^ user.cpp:16:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=0;i<M;i++) fscanf(f,"%u",&S[i]); ^ user.cpp:17:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%u %u %u %u %u %u",&X,&Y,&A,&B,&C,&D); ^