16 lines
224 B
C++
16 lines
224 B
C++
#include <stdio.h>
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int main()
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{
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double sum=0,tmp=1;
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/*while((1/tmp)>=1e-6){
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sum+=1/tmp;
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sum-=1/(tmp+2);
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tmp+=4;
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printf("%.15f\n",1/(tmp+2));
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}
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printf("%.15f",4*sum);*/
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printf("%.15f\n",0.123e-6);
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return 0;
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}
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