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Cod sursa(job #71459)
#include <cstdio>
#define maxn 500001
FILE *in = fopen("secventa.in","r"), *out = fopen("secventa.out","w");
int n;
int k;
int a[maxn] = {0};
void read()
{
fscanf(in, "%d %d", &n, &k);
for ( int i = 1; i <= n; ++i )
fscanf(in, "%d", &a[i]);
}
struct deque
{
int poz, v;
};
deque Q[maxn];
/*
8 3
-1 2 3 1 0 4 8 6
poz[i] = pozitia elementul i din Q in a
Q: poz v
5 0
6 4
8 6
*/
int main()
{
read();
int first = 1, last = 1;
Q[first].v = a[1];
Q[first].poz = 1;
int min = -300000000;
int pmin = 0;
for ( int i = 2; i <= n; ++i )
{
while ( first <= last && i - Q[first].poz >= k )
++first;
while ( last >= first && Q[last].v >= a[i] )
--last;
if ( Q[first].v > min )
min = Q[first].v, pmin = Q[first].poz;
Q[++last].v = a[i];
Q[last].poz = i;
}
// printf("%d %d\n\n", first, last);
fprintf(out, "%d %d %d\n", pmin, pmin + k - 1, min);
// int min = 100000000;
// int start = 0, stop = 0;
// for ( int i = 1; i <= last; ++i )
// if ( Q[i].v < min )
// min = Q[i].v, start = Q[i].poz, stop = Q[i].poz + k - 1;
//
// for ( int i = 1; i <= n; ++i )
// printf("%d %d\n", Q[i].v, Q[i].poz);
//
// printf("\n");
//
// fprintf(stdout, "%d %d %d\n", start, stop, min);
return 0;
}