CF257D Sum

Vasya has found a piece of paper with an array written on it. The array consists of $ n $ integers $ a_{1},a_{2},...,a_{n} $ . Vasya noticed that the following condition holds for the array $ a_{i}

The first line contains integer $ n $ ( $ 1

In a single line print the sequence of $ n $ characters "+" and "-", where the $ i $ -th character is the sign that is placed in front of number $ a_{i} $ . The value of the resulting expression $ s $ must fit into the limits $ 0