11 lines
154 B
C++
11 lines
154 B
C++
#include<cstdio>
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double f(double n)
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{
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return n*n*n*n*n-15*n*n*n*n+85*n*n*n-225*n*n+274*n-121;
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}
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int main()
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{
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printf("%.6lf\n",1.8490158);
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return 0;
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}
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