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Cod sursa(job #812779)
#include<cstdio>
#include<cstring>
#define maxn 500005
short v[maxn];
int d[maxn];
char buff[maxn*10];
int back,front,sol=-1<<30,l,r;
int n,k,cnt,neg,len;
int get_nr()
{
neg=1;
int nr=0;
for(int i=cnt;i<len;i++)
{
if(buff[i]=='-') neg=-1;
else if(buff[i]>='0' && buff[i]<='9') nr=nr*10+(buff[i]-'0');
else if(buff[i]==' ') {cnt=i+1;return nr*neg;};
}
return nr*neg;
}
void read()
{
freopen("secventa.in","r",stdin);
scanf("%d %d\n",&n,&k);
fgets(buff,maxn*10,stdin);
len=strlen(buff);
front=1;
for(int i=1;i<=n;i++)
{
v[i]=get_nr();
while(v[i]<v[d[back]] && front<=back) back--;
d[++back]=i;
if(v[d[front]]>sol && i>=k) sol=v[d[front]],r=i,l=r-k+1;
if(d[back]-d[front]+1>=k)
{
front++;
}
}
}
int main()
{
read();
freopen("secventa.out","w",stdout);
printf("%d %d %d",l,r,sol);
}