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Cod sursa(job #20118)
#include<fstream.h>
ifstream f("secv2.in");
ofstream g("secv2.out");
int n,k,i,val,start,dr,st,rez,a[5000],s[5000];
int main()
{
f>>n>>k;
for(i=1;i<=n;i++)
{
f>>a[i];
s[i]=s[i-1]+a[i];
}
rez=s[k];
st=1;
dr=k;
val=s[k];
start=1;
for(i=k+1;i<=n;i++)
{
val=val+a[i];
if(val<s[i]-s[i-k])
{
val=s[i]-s[i-k];
start=i-k+1;
}
if(rez<val)
{
rez=val;
st=start;
dr=i;
}
}
g<<st<<' '<<dr<<' '<<rez<<endl;
f.close();
g.close();
return 0;
}