## 1416: 面积

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## 题目描述

0  0  0  0  0  0  0  0  0  0
0  0  0  0  *  *  *  0  0  0
0  0  0  0  *  0  0  *  0  0
0  0  0  0  0  *  0  0  *  0
0  0  *  0  0  0  *  0  *  0
0  *  0  *  0  *  0  0  *  0
0  *  0  0  *  *  0  *  *  0
0  0  *  0  0  0  0  *  0  0
0  0  0  *  *  *  *  *  0  0
0  0  0  0  0  0  0  0  0  0

## 样例输入

0 0 0 0 0 0 0 0 0 0
0 0 0 0 1 1 1 0 0 0
0 0 0 0 1 0 0 1 0 0
0 0 0 0 0 1 0 0 1 0
0 0 1 0 0 0 1 0 1 0
0 1 0 1 0 1 0 0 1 0
0 1 0 0 1 1 0 1 1 0
0 0 1 0 0 0 0 1 0 0
0 0 0 1 1 1 1 1 0 0
0 0 0 0 0 0 0 0 0 0

## 样例输出

15

## 标签

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