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Create 1234.cpp

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Kirigaya Kazuto 2016-04-11 11:01:08 +08:00
parent dfc8d86b5f
commit e844602a1e
1 changed files with 47 additions and 0 deletions
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#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
using namespace std;
int main()
{
int n,R,r;
while(scanf("%d %d %d",&n,&R,&r)==3)
{
if(n==1)
{
if(R<r)
{
printf("NO\n");
}
else
{
printf("YES\n");
}
continue;
}
if(n==2)
{
if(R<2*r)
{
printf("NO\n");
}
else
{
printf("YES\n");
}
continue;
}
int maxN=1/(asin((double)r/(R-r))/3.1415927);
if(n<=maxN)
{
printf("YES\n");
}
else
{
printf("NO\n");
}
}
return 0;
}