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Cod sursa(job #95207)
#include<fstream.h>
#include<iomanip.h>
#define dim 50001
int v[2][dim];
int main()
{ifstream f("secv3.in");
ofstream g("secv3.out");
int n,l,i,j,n1,n2,u;
float max=-2000000000,man1,man2,man;
f>>n>>l>>u;
n1=(n-l)+1;
for(i=1;i<=n;i++)
{f>>v[0][i];
v[0][i]=v[0][i]+v[0][i-1];
}
for(i=1;i<=n;i++)
{f>>v[1][i];
v[1][i]=v[1][i]+v[1][i-1];
}
for(i=0;i<=n1;i++)
{n2=i+u;
for(j=(i+l);(j<=n2)&&(j<=n);j++)
{man1=v[0][j]-v[0][i];
man2=v[1][j]-v[1][i];
if(man2)
{man=man1/man2;
if(man>max)
max=man;
}
}
}
f.close();
g<<setprecision(2)<<max<<'\n';
g.close();
return 0;
}