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  1. #include<stdio.h>
  2. #include<stdbool.h>
  3. int main() {
  4. 	int n;
  5. 	scanf("%d",&n);
  6. 	int a[n];
  7.     bool check[100000];
  8. 	for(int i=0; i<=n-1;i++) {
  9. 		scanf("%d", &a[i]);
  10.         check[a[i]] = true;
  11. 	}
  12. 	int dem;
  13.     bool ok = false;
  14. 	for(int i=0; i<n-1; i++) {
  15.         dem = 1;
  16.         if(check[a[i]]){
  17. 		    for(int j=i+1; j<n; j++) {
  18. 			    if(a[i] == a[j]){
  19. 				    dem++;
  20.                     ok = true;
  21. 			    }		
  22. 		    }
  23.         }
  24.         check[a[i]] = false;
  25.         if(dem>1){
  26.             printf("%d ",a[i]);
  27. 	    }
  28.     }
  29. 	if(!ok) 
  30.         printf("0");
  31. 	return 0;
  32. }
Success #stdin #stdout 0s 5540KB
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https://ideone.com/fKwZSm
language:
C (gcc 8.3)
created:
3 years ago
visibility:
public

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