信息学奥赛一本通1031-1040

1031

#include
#include
#include
using namespace std;
int main()
{
    int a,g,s,b;
    cin>>a;
    g=a%10;
    s=a/10%10;
    b=a/100;
    cout< 
1032
 
#include
#include
using namespace std;
const double pi=3.14;
int main()
{
    int h,r,n;
    double v;
    scanf("%d%d",&h,&r);
    v=h*pi*r*r;
    n=ceil(20*1000/v);//ceil(向上取整函数);floor(向下取整函数). 
    printf("%d",n);
    return 0;
}
 
1033
 
#include
#include
#include
#include
using namespace std;
int main()
{
	double x1,y1,x2,y2;
	cin>>x1>>y1>>x2>>y2;
	cout<” 
	return 0;
}
 
1034
 
#include
#include
#include
using namespace std;
int main()
{ 
	double x1,x2,x3,y1,y2,y3,a,b,c,s,p;
	cin>>x1>>y1>>x2>>y2>>x3>>y3;
    a=sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
	b=sqrt((x3-x1)*(x3-x1)+(y3-y1)*(y3-y1));
	c=sqrt((x2-x3)*(x2-x3)+(y2-y3)*(y2-y3));
	p=(a+b+c)/2.0;
	s=sqrt(p*(p-a)*(p-b)*(p-c));
	printf("%.2lf",s);
	return 0;
} 
 
1035
 
#include"iostream"
#include"cstdio"
using namespace std;
int main()
{
	int a1,a2,n;
	cin>>a1>>a2>>n;
	int q=a2-a1;
	cout< 
1036
 
#include"iostream"
using namespace std;
int main()
{
	long long A,B,S;
	cin>>A>>B;
	A>=1 && A<=500000;
	B>=1 && A<=500000;
	S=A*B;
	cout< 
1037
 
#include
using namespace std;
int main() 
{
	 int n,s=1;
     cin>>n;
     for(int i=1;i<=n;i++)
      {
          s*=2;
      }
      cout< 
1038
 
#include
#include
#include
using namespace std;
int main()
{
    int m,n,x,y;
    cin>>n>>x>>y;
    m=y/x;
    if(m>=n)
      m=n;
    else if(y%x==0)
      m=y/x;
    else
      m=y/x+1;
    cout< 
1039
 
#include
using namespace std;
int main()
{
   int n;
   cin>>n;
   if(n>0)
	  cout<<"positive";
   else
	 if(n==0)
	    cout<<"zero";
     else
	   cout<<"negative";
	   return 0;
}
 
1040
 
#include"iostream"
#include"iomanip"
#include"cstdio"
#include"cmath"
using namespace std;
int main()
{
	double a;
	cin>>a;
	if(fabs(a)<=10000)//fabs():绝对值函数 
	  cout< 
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