15 lines
299 B
C++
15 lines
299 B
C++
#include <iostream>
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#include <iomanip>
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#include <cmath>
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using namespace std;
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int main(){
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double a,n,o;
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while(cin>>a>>n){
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o = a;
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for(int i =0;i<n-1;i++)
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o += a=sqrt(a);
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cout << setiosflags(ios::fixed) << setprecision(2) << o << endl;
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}
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return 0;
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}
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