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Cod sursa(job #29620)
#include<stdio.h>
#include <string.h>
#include <stdlib.h>
FILE *f= fopen("secventa.in", "rt");
FILE *g = fopen("secventa.out", "wt");
int V[500010],
contor=0,deque[500010],primul=1,ultimul,N,K,max,PozInit,PozFin,poz[500010];
char s[10*500010];
int main()
{
fscanf(f,"%d %d ",&N,&K);
fgets(s, sizeof(s), f);
int n = strlen(s), k = 0, a = 0;
for (int i = 0; i < n; i++)
if (s[i] == ' ') V[++k] = a, a = 0;
else
if ('0' <= s[i] && s[i] <= '9') a = a*10+(int)(s[i]-'0');
V[++k] = a;
for(int i=1;i<=K;i++)
{int aux;
aux = V[i];
while(aux<deque[ultimul] && ultimul > 0)
ultimul--;
deque[++ultimul] = aux;
poz[ultimul] = i;
}
max=deque[primul];
PozInit=poz[primul];PozFin=poz[ultimul];
for(int i=K+1;i<=N;i++)
{
int aux;
aux = V[i];
if(poz[primul]<i-K+1)
primul++;
while(aux<deque[ultimul] && ultimul >= primul)
ultimul--;
deque[++ultimul] = aux;
poz[ultimul] = i;
if(max<deque[primul])
{max=deque[primul];
PozFin=i;
}
}
fprintf(g,"%d %d %d",PozFin-K+1,PozFin, max);
fclose(f);
fclose(g);
return 0;
}