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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <math.h>
  4. #include <stdlib.h>
  5. int main(void) {
  6. 	char * number;
  7. 	int instances;
  8. 	scanf("%d", &instances);
  9. 	int i;
  10. 	for (i = 0; i < instances; i++){
  11. 		number =  malloc(sizeof(char)*(10000000));
  12. 		scanf("%s", number);
  13. 		int len = strlen(number);
  14. 		int k;
  15. 		int flag = 1;
  16.  
  17. 		// In case the number is all 9s
  18. 		for (k = 0; k < len; k++){
  19. 			if (number[k] != '9'){
  20. 				flag = 0;
  21. 			}
  22. 		}
  23.  
  24. 		if (flag == 1){
  25. 			printf("1");
  26. 			for (k = 0; k < len - 1; k++){
  27. 				printf("0");
  28. 			}
  29. 			printf("1\n");
  30.  
  31. 		}
  32. 		else{
  33. 			int left = (int)ceil((double)len / 2)-1;
  34.             int right;
  35. 			if(len%2 == 0)
  36. 			   right = left+1;
  37. 			 else
  38. 			   right = left;
  39.  
  40. 			for (k = 0; k <= (int)floor(len / 2.0); k++){
  41. 				// if middle numbers are not nines
  42. 				if ((number[left] != '9') && (number[right] != '9')){
  43. 					int numL = number[left];
  44. 					int numR = number[right];
  45. 					number[left--] = (char)(numL + 1);
  46. 					number[right++] = (char)(numR + 1);
  47. 					break;
  48. 				}
  49. 				else{
  50. 					number[left--] = '0';
  51. 					number[right++] = '0';
  52. 				}
  53. 			}
  54. 			printf("%s\n", number);
  55. 		}
  56. 	}
  57. 	free(number);
  58. 	return 0;
  59. }
  60.  
Success #stdin #stdout 0s 109440KB
comments (?)
stdin
copy 
12
1
9
12
99
101
999
1001
808
900000000000000000000000000000000000009
123454321
1999999999991
199999999991
stdout
copy 
2
11
23
101
111
1001
1111
818
900000000000000000010000000000000000009
123464321
2000000000002
200000000002
https://ideone.com/12bw7n
language:
C (gcc 8.3)
created:
9 years ago
visibility:
secret

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