Cod sursa(job #1010939)

Utilizator Athena99Anghel Anca Athena99 Data 15 octombrie 2013 22:00:24
Problema Secventa Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.17 kb
#include <fstream>
#include <deque>
#include <string>

using namespace std;

ifstream fin("secventa.in");
ofstream fout("secventa.out");

const int nmax= 500000;
const int inf= 1<<30;

string buffer;
string::iterator buffer_it;

deque <int> d;

int v[nmax+1];

void read_int( int &x ) {
    while ( ('0'>*buffer_it || *buffer_it>'9') && *buffer_it!='-' ) {
        ++buffer_it;
    }

    int sign;
    if ( *buffer_it=='-' ) {
        sign= -1;
        ++buffer_it;
    } else {
        sign= 1;
    }

    x= 0;
    while ( '0'<=*buffer_it && *buffer_it<='9' ) {
        x= x*10+*buffer_it-'0';
        ++buffer_it;
    }
    x*= sign;
}

int main(  )
{
    getline(fin, buffer, (char)0);
    buffer_it= buffer.begin();

    int n, k, p= 0, sol= -inf;
    read_int(n); read_int(k);
    for ( int i= 1; i<=n; ++i ) {
        read_int(v[i]);
        if ( i-k==d.front() ) {
            d.pop_front();
        }

        while ( d.empty()==0 && v[i]<v[d.back()] ) {
            d.pop_back();
        }
        d.push_back(i);

        if ( k<=i && sol<v[d.front()] ) {
            p= i;
            sol= v[d.front()];
        }
    }

    fout<<p-k+1<<" "<<p<<" "<<sol<<"\n";

    return 0;
}