Compilare: user.cpp: In function ‘int Compute(char*, std::vector<int>, bool)’: user.cpp:28:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k,idx,res,temp; ^ user.cpp:28:15: warning: unused variable ‘idx’ [-Wunused-variable] int i,j,k,idx,res,temp; ^ user.cpp: In function ‘int main()’: user.cpp:82:15: warning: unused variable ‘res’ [-Wunused-variable] int i,x,y,res,cnt; ^ user.cpp:84:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&N,&M); ^ user.cpp:85:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i = 1; i <= N; ++i) fscanf(fin,"%d",&v[i]); ^ user.cpp:88:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^