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Cod sursa(job #126913)
#include<stdio.h>
FILE*fin=fopen("secventa.in","r");
FILE*fout=fopen("secventa.out","w");
int main()
{
int i,j,n,k,max,s,st,dr,v[500001],dec[500001],ind[500001];
fscanf(fin,"%d%d",&n,&k);
for(i=1;i<=n;i++)
fscanf(fin,"%d",&v[i]);
fclose(fin);
st=dr=1;
dec[1]=v[1];ind[1]=1;s=k;
j=1;
for(i=2;i<=k;i++)
{
while(j>=st&&dec[j]>v[i]) j--;
j++;dr=j;
dec[dr]=v[i];
ind[dr]=i;
}
max=dec[1];
for(i=k+1;i<=n;i++)
{
if(ind[st]<i-k+1) st=st+1;
while(j>=st&&dec[j]>v[i]) j--;
j=j+1;dr=j;
dec[dr]=v[i];
ind[dr]=i;
if(max<dec[st]){max=dec[st];s=i;}
}
fprintf(fout,"%d%c%d%c%d",s-k+1,' ',s,' ',max);
fclose(fout);
return 0;}