杭电oj2009求数列的和

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 //	求数列的和
 #include<iostream>
#include<math.h>
 #include <cstdio>
 using namespace std;
 int main()
 {
 	int n;
 	int m;
 	float a;
 	float s;
 
 while(n<10000&&m<10000)
 {
 
 	while(cin>>n>>m)
 	{
 		
	 
 		s=n;
 		a=n;
 		for(int i=2;i<=m;i++)
 	{
 		{
 		    a=sqrt(a);
 			
 			s+=a;
 			
 			
		 }
		 
 	
 	
}	 
  printf("%.2f\n",s);
}
}
	 return 0;
 	
 
}

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