Submission #16798

#TimeUsernameProblemLanguageResultExecution timeMemory
16798kdh9949제곱근 구하기 2 (gs13068_sqrt2)C++98
1 / 1
0 ms1084 KiB
#include <stdio.h>

long long n,k,s;

int main()
{
    scanf("%lld",&n);
    for(k=1;k*(k-1)<=n;k++);k--;k*=2;
    printf("%.6f",(double)(n+k*k/4)/k);
}
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