Cod sursa(job #71832)

Utilizator DastasIonescu Vlad Dastas Data 11 iulie 2007 19:22:21
Problema Secventa Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.95 kb
#include <cstdio>
#include <cstring>

#define maxn 500001

FILE *in = fopen("secventa.in","r"), *out = fopen("secventa.out","w");

int n;
int k;
int e;
int a[maxn] = {0};

char buf[1024];

void read()
{
    fscanf(in, "%d %d", &n, &k);

    e = n + 1;

    int k = 1;
    int minus = 0;
    while ( fgets(buf, 1024, in) )
    {
        int l = strlen(buf);

        for ( int i = 0; i < l; ++i )
            if ( buf[i] <= '9' && buf[i] >= '0' )
                a[k] = a[k]*10 + (buf[i] - '0');
            else if ( buf[i] == ' ' )
            {
                if ( minus )
                    a[k] *= -1;
                ++k;
                minus = 0;
            }
            else if ( buf[i] == '-' )
                minus = 1;
    }
//
//    for ( int i = 1; i < e; ++i )
//        printf("%d ", a[i]);
}

struct deque
{
    int poz, v;
};

deque Q[maxn];

int main()
{
    read();

    int first = 1, last = 1;

    int max = -3000000;

    int pmin = 0;

    int min = 3000000;
    for ( int i = 1; i < k + 1; ++i )
        if ( a[i] < min )
            min = a[i], pmin = i;

    max = min;

    for ( int i = 1; i < e; ++i )
    {
        while ( first < last + 1 && i - Q[first].poz >= k )
            ++first;
        while ( last > first - 1 && Q[last].v > a[i] - 1 )
            --last;

        ++last;
        Q[last].v = a[i];
        Q[last].poz = i;

        if ( Q[first].v > max && Q[first].poz > k - 1 )
            max = Q[first].v, pmin = Q[first].poz;

//        for ( int j = first; j <= last; ++j )
//            printf("%d ", Q[j].v);
//        printf("\n");
    }

    int st = pmin;
    int dr = pmin;

    int p = max - 1;

    if ( k > 1 )
    {
        while ( a[st] > p && st )
            --st;
        ++st;
        while ( a[dr] > p && dr - st < k )
            ++dr;
        --dr;
    }

    fprintf(out, "%d %d %d\n", st, dr, max);


    return 0;
}