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  1. #include <stdio.h>
  2. int main(void)
  3. {
  4. int n = 0;
  5. int a = 3;
  6. while(a <= 10000)
  7. {
  8. a = 2 * a - 1;
  9. n=n+1;
  10. }
  11. printf("初めて10000を超えるときのa%d=%d", n, a);
  12. return 0;
  13. }
Success #stdin #stdout 0s 5328KB
stdin
Standard input is empty
stdout
初めて10000を超えるときのa13=16385