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Problem B: 【入门】计算矩形面积
Problem B: 【入门】计算矩形面积
Time Limit:
1 Sec
Memory Limit:
128 MB
Submit:
1161
Solved:
853
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Description
输入矩形的两个边长a、b,a与b均为实数,计算并输出矩形的面积s,输出格式为默认%f即可。
Sample Input
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3 4
Sample Output
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12.000000