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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a,b;
  5. scanf("%d",&a);
  6. scanf("%d",&b);
  7. if (!((a>20)&&(b<10)))
  8. printf("yes");
  9. else
  10. printf("No!");
  11. return 0;
  12. }
  13.  
Success #stdin #stdout 0s 5280KB
stdin
23 11
stdout
yes