Cod sursa(job #1316284)

Utilizator ducu34Albastroiu Radu Gabriel ducu34 Data 13 ianuarie 2015 18:09:45
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.96 kb
#include <fstream>
#include <string>
using namespace std;
ifstream fin("secventa.in");
ofstream fout("secventa.out");
int v[5000005],d[5000005];
long long n,k,i,front,back,S,MAX,l,fr;
char s[5000005];
void chg()
{
    int semn, j, r;
    j = 1;
    for (int i = 0; s[i] != 0; i++)
    {
        semn = 1;
        r = 0;
        if (s[i] == '-')
        {
            semn = -1;
            i++;
        }
        while (s[i] >= '0' && s[i] <= '9')
        {
            r = r * 10 + s[i] - '0';
            i++;
        }
        v[j] = r * semn;
        j++;
    }
}
int main()
{
	fin>>n>>k;
	MAX=-9999999;
	fin.get();
    fin.getline(s,5000100);
	chg();
	front=1;back=1;
	for(i=1;i<=n;i++)
	{
		while(front<=back&&v[i]<=v[d[back]])
			back--;
		back++;
		d[back]=i;
		if(d[front]==i-k)
			front++;
		if(i>=k && v[d[front]]>MAX)
		{
			MAX=v[d[front]];
			l=i;
			fr=i-k+1;
		}
	}
	fout<<fr<<" "<<l<<" "<<MAX;
	return 0;
}