hai anh em bi và bo có n gói kẹo, số kẹo trong mỗi gói là a1,a2,..,an. vì là em nên bo được chọn phần kẹo có số lượng gói kẹo ít nhất nhưng tổng số kẹo nhiều hơn tổng số kẹo của anh bi. yêu cầu:tính số lượng gói kẹo của bo vd:N=3 a=3 6 3 in ra 2

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