Cod sursa(job #27463)

Utilizator fireatmyselfBogdan-Alexandru Stoica fireatmyself Data 6 martie 2007 14:27:11
Problema Secventa Scor 80
Compilator c Status done
Runda Arhiva de probleme Marime 1.11 kb
#include<stdio.h>
#define NMAX 500010
#define INF 666666
#define PMAX 60666
#define FOR(i, a, b) for (i = a; i <= b; i++)

int V[NMAX], D[NMAX], N, K, Max = -INF, PF;
int P[PMAX];
int buf[6*NMAX];

int main()
{
        int i, st = 0, sf = 1, j, min;

        FILE *fin = fopen("secventa.in", "r");
	setbuffer(fin, buf, sizeof(buf));
        fscanf(fin, "%d %d", &N, &K);
        for (i = 1; i <= N; i++) fscanf(fin, "%d", V+i);

        min = INF;
        for (i = 0; i < NMAX; i++) D[i] = INF;
        sf = 0;
	FOR(i, 1, K)        
        {
                while (sf > 0 && D[sf] > V[i]) sf--;
                D[++sf] = V[i];
                P[sf] = i;
        }
        Max = D[1]; PF = K;

        st = 1;
        FOR(i, K+1, N)
        {
                if (P[st] < i-K+1) st++;
                while (sf >= st && D[sf] > V[i]) sf--;
                D[++sf] = V[i];
                P[sf] = i;
                if (Max < D[st]) Max = D[st], PF = i;
        }

        freopen("secventa.out", "w", stdout);
        printf("%d %d %d\n", PF-K+1, PF, Max);

        return 0;
        
}