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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main(){
  5.     int folder[10]={0}, sum=0;
  6.     long long N;
  7.  
  8.     cin >> N;
  9. 	while (N!=0){
  10.         folder[N%10]++;
  11.         N/=10;
  12.     }
  13. 	for (int j=0; j<10; j++)
  14. 		if(folder[j]!=0)	sum++;
  15.  	cout << "sum:" << sum;
  16.  
  17.     return 0;
  18. }
Success #stdin #stdout 0s 16064KB
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stdin
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302
stdout
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sum:3
https://ideone.com/Rfmd4K
A302
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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