18 lines
272 B
C++
18 lines
272 B
C++
#include<cstdio>
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#include<cmath>
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#include<algorithm>
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using namespace std;
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int L=1,R=2000000000,M,res=2000000000,n;
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int main()
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{
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scanf("%d",&n); n--;
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while(L<=R)
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{
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M=(L+R)>>1;
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if(M*log10(M)>=(double)n) res=M,R=M-1;
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else L=M+1;
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}
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printf("%d\n",res);
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return 0;
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}
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