48 lines
812 B
C++
48 lines
812 B
C++
#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <cmath>
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using namespace std;
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int main()
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{
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int n,R,r;
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while(scanf("%d %d %d",&n,&R,&r)==3)
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{
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if(n==1)
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{
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if(R<r)
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{
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printf("NO\n");
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}
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else
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{
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printf("YES\n");
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}
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continue;
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}
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if(n==2)
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{
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if(R<2*r)
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{
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printf("NO\n");
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}
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else
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{
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printf("YES\n");
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}
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continue;
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}
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int maxN=1/(asin((double)r/(R-r))/3.1415927);
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if(n<=maxN)
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{
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printf("YES\n");
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}
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else
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{
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printf("NO\n");
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}
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}
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return 0;
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}
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