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  1. #include <bits/stdc++.h> 
  2. using namespace std; 
  3. int main() { 
  4.  int n;
  5.  cin >> n;
  6.  int i=1; 
  7.  int s=0;
  8.  while (i <= n) { 
  9. 	s=s+i;
  10. 	i++;
  11.  } 
  12.  cout << s; 
  13.  return 0; 
  14. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/r2Ftay
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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