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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int n;
  7.     cin>>n;
  8.     char c='A';
  9.     for(int i=0;i<n;i++) {
  10.         for(int j=0;j<=i;j++) {
  11.                 cout<<c;
  12.                 cout<<" ";
  13.                 c++;
  14.         } 
  15.         cout<<endl;
  16.     }
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 5316KB
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stdin
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5
stdout
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A 
B C 
D E F 
G H I J 
K L M N O
https://ideone.com/ZPpnwu
language:
C++14 (gcc 8.3)
created:
13 hours ago
visibility:
public

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