Cod sursa(job #460035)

Utilizator mihaipopa12Popa Mihai mihaipopa12 Data 31 mai 2010 23:52:59
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.57 kb
#include<cstdio>
#include<fstream>
using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
int sol = -999999,n,k,i,front,back,v[500005],deque[500005],a,b;
int main () {
	fin>>n>>k;
	for(i=1; i<=n ;++i)
		fin>>v[i];
	front = 1; back = 1;
	deque[1] = 1;
	a = b = 1;
	for(i=2; i<=n; ++i){
		
		while(front<=back && v[i]<=v[deque[back]])
			back--;
		deque[++back] = i;
		if(i>=k&&v[deque[front]]>sol){
			a = i-k+1; b  = i;
			sol = v[deque[front]];
		}
		if(deque[front]<=i-k+1)
			front++;
	}
	fout<<a<<" "<<b<<" "<<sol;
	return 0;
}