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1599 - 求2的n次方
1599 - 求2的n次方
求2的n次方!(0<=n<=100)
Input
从键盘读入一个整数n!
Output
请输出2的n次方!
Examples
Input
100
Output
1267650600228229401496703205376
Time Limit
1 second
Memory Limit
64 MB
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Submit:1599. 求2的n次方
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