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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int i=1,sum=0;
  5. while(sum >= 1000)
  6. {
  7. sum += i;
  8. i++;
  9. }
  10. printf("%d",i);
  11. return 0;
  12. }
  13.  
Success #stdin #stdout 0s 5328KB
stdin
Standard input is empty
stdout
1