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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4.  
  5. int main() {
  6. 	int n; int m;
  7.  
  8. 	scanf("%d %d", &n, &m);
  9.  
  10. 	char a[101][101];
  11. 	char b[101][101];
  12.  
  13. 	char cc = getchar();
  14. 	for (int i = 0; i < n; i++) {
  15. 		for (int j = 0; j < m; j++) {
  16. 			char ch = getchar();
  17. 			a[i][j] = ch;
  18. 			b[i][j] = ch;
  19. 		}
  20. 		cc=getchar();
  21. 	}
  22.  
  23. 	for (int i = 0; i < n; i++) {
  24. 		int c[101] = {0};
  25. 		int d[101] = {0};	
  26.  
  27. 		for (int j = 0; j < m; j++) {
  28. 			if (c[a[i][j]-'a'] == -1) {
  29. 				a[i][d[a[i][j]-'a']] = '-';
  30. 				a[i][j] = '-';
  31. 			} else {
  32. 				c[a[i][j]-'a'] = -1;
  33. 				d[a[i][j]-'a'] = j;
  34. 			}
  35. 		}
  36. 	}
  37.  
  38. 	for (int i = 0; i < m; i++) {
  39. 		int c[101] = {0};
  40. 		int d[101] = {0};	
  41.  
  42. 		for (int j = 0; j < n; j++) {
  43. 			if (c[b[j][i]-'a'] == -1) {
  44. 				b[d[b[j][i]-'a']][i] = '-';
  45. 				b[j][i] = '-';
  46. 			} else {
  47. 				c[b[j][i]-'a'] = -1;
  48. 				d[b[j][i]-'a'] = j;
  49. 			}
  50. 		}
  51. 	}
  52.  
  53. 	for (int i = 0; i < n; i++) {
  54. 		for (int j = 0; j < m; j++) {
  55. 			if (a[i][j] != '-' && b[i][j] != '-') {
  56. 				printf("%c", a[i][j]);
  57. 			}
  58. 		}
  59. 	}
  60. 	printf("\n");
  61. }
  62.  
Success #stdin #stdout 0s 3144KB
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language:

						
C++ (gcc 8.3)

					

					

						
created:
								
						
9 years ago

					

					

						
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