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[OBI/2] Frequência.c

Jul 6th, 2013
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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define MAX 1000000 + 1
  5.  
  6. int main()
  7. {
  8.     int nAlunos, i, Count = 0;
  9.     scanf("%d", &nAlunos);
  10.  
  11.     int Pres[MAX];
  12.  
  13.     for(i = 0; i <= MAX; i++)
  14.         Pres[i] = 0;
  15.  
  16.     for(i = 0; i < nAlunos; i++) {
  17.         int aux;
  18.         scanf("%d", &aux);
  19.  
  20.         Pres[aux] = 1;
  21.     }
  22.  
  23.     for(i = 0; i <= MAX; i++)
  24.         if(Pres[i] == 1)
  25.             Count++;
  26.  
  27.     printf("%d\n", Count);
  28.  
  29.     return 0;
  30. }
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