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Sep 16th, 2019
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C 0.28 KB | None | 0 0
  1. #include <stdio.h>
  2.  
  3. int main(){
  4.     int doors[365], i, j, s;
  5.     for(i=0; i<365; i++)
  6.         doors[i] = 0;
  7.     for(i=0; i<365; i++)
  8.         for(j=i; j<365; j+=i+1)
  9.             doors[j] = doors[j] ? 0 : 1;
  10.     for(i=0, s=0; i<365; i++)
  11.         s += doors[i];
  12.     printf("%d rab lesz szabad.\n\n", s);
  13.     return 0;
  14. }
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