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#include"stdio.h"
#include"math.h"
int main(void){
double m, n;
while(scanf("%lf%lf", &n, &m) != EOF){
double sum, x;
sum = n;
int i;
for(i=1; i<m; i++){
n = sqrt(n);
sum += n;
}
printf("%.2lf\n", sum);
}
return 0;
}
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原文地址:http://www.cnblogs.com/cnfanhua/p/4220935.html