// thuan toan: sap xep, tim kiem
// bo nho dong 
// ham con
bai 1. viet chuong trinh tim so lon nhat va nho nhat trong 1 mang 1 chieu gom n phan tu, 
dung cap phat dong?
bai 2. viet chuong trinh nhap vao 1 mang 1 chieu gom n phan tu, 
sau do sap xep tang dan giam dan, dung cap phat dong?
bai 3. viet chuong trinh tinh tich 2 ma tran A(mxn) B(nxk)?
bai 4. nhap 1 day so nguyen, nhap 1 so x , in ra cac chi so va gia tri cua nhung
phan tu lon hon x?
bai 5. nhap nam duong lich in nam am lich tuong ung?
bai 6. kieu du lieu