Cod sursa(job #1697918)

Utilizator quochuyaNguyen Quoc Huy quochuya Data 3 mai 2016 10:57:12
Problema Secventa Scor 80
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.62 kb
#include <bits/stdc++.h>

using namespace std;

const int maxN = (int)5E5;

int n, k;
int a[maxN], dq[maxN];

int main() {
	freopen("secventa.in", "r", stdin);
	freopen("secventa.out", "w", stdout);
	scanf("%d %d", &n, &k);
	int l, r, m, top, bot;
	m = -(int)2E9;

	top = -1; bot = 0;
	for(int i = 0; i < n; ++i) {
		scanf("%d", &a[i]);
		while (top >= bot && a[i] <= a[dq[top]]) --top;
		dq[++top] = i;
		if (i >= k-1) {
			while (top >= bot && dq[bot] < i-k+1) ++bot;
			if (a[dq[bot]] > m) {
				m = a[dq[bot]];
				l = i-k+1;
				r = i;
			}
		}
	}

	printf("%d %d %d\n", l+1, r+1, m);
	return 0;
}