http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2762
#include <cstdio>
#include <cmath>
#include <iostream>
using namespace std;
int main(int ar, char*av[])
{
int T=1;
int c;
while(true)
{
cin>>c;
if(c==0)return 0;
double u,v,t,a,s;
if(c==1)
{
cin>>u>>v>>t;
a=(v-u)/t;
s=u*t+0.5*a*(pow(t,2.0));
printf("Case %d: %.3f %.3f\n",T,s,a);
}
else if(c==2)
{
cin>>u>>v>>a;
t=(v-u)/a;
s=u*t+0.5*a*(pow(t,2.0));
printf("Case %d: %.3f %.3f\n",T,s,t);
}
else if(c==3)
{
cin>>u>>a>>s;
t=(sqrt(u*u+2.0*s*a)-u)/(a);
v=t*a+u;
printf("Case %d: %.3f %.3f\n",T,v,t);
}
else if(c==4)
{
cin>>v>>a>>s;
u=sqrt(v*v-2.0*s*a);
t=(v-u)/a;
printf("Case %d: %.3f %.3f\n",T,u,t);
}
T++;
};
return 0;
}
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