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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int i, j;
  5. for (i=1; i<4; i++){
  6. for (j=1; j<5; j++){
  7. printf("%d%d\n", i, j);
  8. }
  9. }
  10. return 0;
  11. }
  12.  
  13.  
Success #stdin #stdout 0s 5288KB
stdin
Standard input is empty
stdout
11
12
13
14
21
22
23
24
31
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34