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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int n, group;
  5. scanf("%d", &n);
  6. group = (n - 1) / 3 + 1;
  7. printf("%d", group);
  8. return 0;
  9. }
  10.  
Success #stdin #stdout 0.01s 5312KB
stdin
7
stdout
3