Submission #8165857

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define N 1000005
#define eps 1e-10
#define Pi acos(-1.0)
int n,m,len;
int a[N];
bool f[N];
char s[N];
int main()
{
	int T=1;
	//scanf("%d",&T);
	while(T--)
	{
		int a,b,c;
		scanf("%d%d%d",&a,&b,&c);
		n=a*a*b;
		if(n>=2*c)
		{
			double c1=c*2.0/b/a;
			double l=-eps,r=90.0+eps;
			while(l+eps<r)
			{
				double mid=(l+r)/2;
				if(b*cos((90-mid)/180*Pi)<=c1*cos(mid/180*Pi))
					l=mid;
				else
					r=mid;
			}
			printf("%.10f",90-l);
		}
		else
		{
			double c1=c*2.0/a/a-b;
			c1=b-c1;
			double l=-eps,r=90.0+eps;
			while(l+eps<r)
			{
				double mid=(l+r)/2;
				if(c1*cos((90-mid)/180*Pi)<=a*cos(mid/180*Pi))
					l=mid;
				else
					r=mid;
			}
			printf("%.10f",90-l);
		}
	}
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:17:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d",&a,&b,&c);
                           ^

Judge Result