17 lines
272 B
C
17 lines
272 B
C
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#include <stdio.h>
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#include <math.h>
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int main(void){
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int n = 0, m = 0;
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while(scanf("%d %d",&n,&m) == 2){
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int i = 0;
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double all = 0.0, temp = n;
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for(i = 0; i < m; i++){
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all += temp;
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temp = sqrt(temp);
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}
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printf("%.2lf\n",all);
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getchar();
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}
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return 0;
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}
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